Developing a List-Detail Application

1. Log into your training SAP Business Application Studio.

   1. Perform this step as shown in a previous exercise.

2. Create a new SAP Fiori Freestyle project using the following information:

   Select Template and Target Location

   Field	Value
   Template	SAP Fiori application

   Template Selection

   Field	Value
   Template Type	SAP Fiori
   Template	Basic

   Datasource and Service Selection

   Field	Value
   Data source	Upload a Metadata Document
   Metadata file path	/home/user/projects/Training files/metadata.xml

   View name

   Field	Value
   View name	List

   Project Attributes

   Field	Value
   Module name	ux402_listdetail
   Application title	List-detail App
   Application namespace	student##.com.sap.training.ux402.listdetail
   Description	A simple list-detail app.
   Project folder path	/home/user/projects
   Minimum SAPUI5 version	Let it on the default value

   1. Choose File → New Project from Template in the SAP Business Application Studio.

   2. Choose SAP Fiori application and select Start. 

   3. Choose SAP Fiorias Template Type.

   4. Choose Basic and select Next.

   5. Choose the Data Source and Service Selection following Options:

      • As Data source, select Upload a Metadata Document.
      • As Metadata file path, enter /home/user/projects/Training files/metadata.xml or select the file in the search field and choose OK.

      Choose Next to continue.

   6. In the View name field, enter List, and then choose Next.

   7. For the Project Attributes, enter the following values:

      • As Module name, enter ux402_listdetail.
      • As Application title, enter List-detail Application.
      • As Application namespace, enter student##.com.sap.training.ux402.listdetail.
      • As Description, enter List-detail Application.
      • As Project folder path, enter /home/user/projects.
      • Do not change anything for Minimum SAPUI5 version.
      • Let all radio buttons selected on No.

   8. Select Finish.

3. Upload the JSON files for mock data into a new webapp/localService/data folder.

   1. In the context menu of the webapp/localService folder, select New folder....

   2. A new line appears where you can enter the new folder name: data. Press Enter to confirm.

   3. In the context menu of the webapp/localService/data folder, select Upload....

   4. Select the three mockdata JSON files and click Open.

4. Add the listed views of type XML in the view folder and the corresponding controllers of type JavaScript in the controller folder of your project. Use Copy and then Paste in the context menu of the List.view.xml and the List.controller.js files to create the files. Rename them to the listed view and controller file names. In the created view files, change the controllerName attribute. In the created controller files, change the controller name in the extend function.

   View and Controller file Names

   View file name	Controller File Name
   Detail.view.xml	Detail.controller.js
   DetailObjectNotFound.view.xml	DetailObjectNotFound.controller.js
   NotFound.view.xml	NotFound.controller.js

   1. Select the List.view.xml file in the view folder of your project and from the context menu, choose Copy.

   2. Select the view folder of your project and from the context menu, choose Paste.

   3. Select the created List.view_copy.xml file and from the context menu, choose Rename. Replace List.view_copy.xml with Detail.view.xml and press the Enter key (on your keyboard).

   4. In the opened Detail.view.xml file, edit the controllerNameattribute and replace List with Detail. Save your changes.

   5. Select the List.controller.js file in the controller folder of your project and from the context menu, choose Copy.

   6. Select the controller folder of your project, and from the context menu, choose Paste.

   7. Select the created List.controller_copy.js file and from the context menu, choose Rename. Replace List.controller_copy.xml with Detail.controller.js and press the Enter key (on your keyboard).

   8. In the opened Detail.controller.js file, change the controller name in the extend function by replacing List with Detail. Save your changes.

   9. Repeat steps a to f and create the DetailObjectNotFound and NotFound views with the corresponding controllers.

5. Open the Application main view and add an sap.f.FlexibleColumnLayout element inside the App element with the listed properties and values:

   Attribute	Value
   id	layout
   layout	{mainView>/layout}
   backgroundDesign	Translucent

   1. Open the App.view.xml file in the view folder of your project.

   2. Add the sap.f namespace with the prefix f to the App.view.xml file. Add following code after xmlns="sap.m":

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      xmlns:f="sap.f"

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   3. Add an sap.f.FlexibleColumnLayout element inside the App element with the given attribute-value pairs :

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      <f:FlexibleColumnLayout
       id="layout"
       layout="{mainView>/layout}"
       backgroundDesign="Translucent">
      </f:FlexibleColumnLayout>
      

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   4. Save your changes. Your code should now look like the following:

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      <mvc:View controllerName="student00.com.sap.training.ux402.listdetail.ux402listdetail.controller.App"
       xmlns:html="http://www.w3.org/1999/xhtml"
       xmlns:mvc="sap.ui.core.mvc" displayBlock="true"
       xmlns="sap.m" 
       xmlns:f="sap.f">
       <App id="app">
       <f:FlexibleColumnLayout
       id="layout"
       layout="{mainView>/layout}"
       backgroundDesign="Translucent">
       </f:FlexibleColumnLayout>
       </App>
      </mvc:View>
      
      

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1. Change the listed key-value pairs in the i18n.properties file of your project.

   Title and Description key-value pairs within the i18n.properties File

   Key	Value
   title	Exercise: List-Detail App
   appTitle	Exercise: List-Detail App
   appDescription	A simple list-detail app

   1. Perform this step as shown in a previous exercise.

2. For the List View, add the listed key-value pair to the i18n.properties file of your project.

   List View Key-value Pair within the i18n.properties File

   Key	Value
   listTitle	Carriers

   1. Perform this step as shown in a previous exercise.

3. For the Detail View, add the listed key-value pairs to the i18n.properties file of your project.

   Detail View key-value pairs within the i18n.properties File

   Key	Value
   detailTitle	Carrier
   currencyTitle	Currency
   urlTitle	Url
   tableHeaderText	Connections
   tableNoDataText	No connections available
   idColumnText	Number
   cityFromColumnText	From
   cityToColumnText	To

   1. Perform this step as shown in a previous exercise.

4. For the NotFound View, add the listed key-value pairs to the i18n.properties file of your project.

   NotFound View Key-value Pairs within the i18n.properties File

   Key	Value
   notFoundTitle	Not Found
   notFoundText	The requested resource was not found

   1. Perform this step as shown in a previous exercise.

5. For the DetailObjectNotFound View, add the listed key-value pair to the i18n.properties file of your project.

   DetailObjectNotFound View Key-value Pairs within the i18n.properties File

   Key	Value
   noObjectFoundText	This Carrier is not available

   1. Perform this step as shown in a previous exercise.

1. Check the generated routing configuration and make sure that the following routing configuration parameters are configured correctly. Additionally, remove the clearControlAggregation configuration parameter.

   Routing Configuration

   Configuration Parameter	Values
   routerClass	sap.m.routing.Router
   viewType	XML
   async	true
   viewPath	student##.com.sap.train­ ing.ux402.listdetail. ux402listdetail.view
   controlAggregation	beginColumnPages
   controlId	layout

   1. Open the manifest.json file.

   2. Locate the routing configuration config.

   3. Make sure that the listed configuration parameters are included.

   4. Remove the clearControlAggregation configuration parameter.

   5. Your implementation should look like the following:

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      "config": {
       "routerClass": "sap.m.routing.Router",
       "viewType": "XML",
       "async": true,
       "viewPath": "student00.com.sap.training.ux402.listdetail.ux402listdetail.view",
       "controlAggregation": "beginColumnPages",
       "controlId": "layout"
      },
      
      

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2. Check the TargetList target against the listed attributes and values and rename it to masterlist.

   List Target

   Attribute	Value
   viewType	XML
   transition	slide
   viewName	List
   viewLevel	1
   viewId	list
   controlAggregation	beginColumnPages

   1. Find the Targetlist target and check to ensure that it has all the listed attributes and values and rename it to masterlist.

   2. Your implementation should look like the following code:

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      "targets": {
       "masterlist": {
       "viewType": "XML",
       "transition": "slide",
       "ControlAggregation": "beginColumnPages",
       "viewId": "list",
       "viewName": "List",
       "viewLevel": 1
       }
      
      

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3. Define a target with the name carrierdetails with the listed attributes and values.

   carrierdetails Target

   Configuration Parameter	Value
   viewType	XML
   transition	slide
   viewName	Detail
   viewLevel	2
   viewId	carrierdetails
   controlAggregation	midColumnPages

   1. Add the carrierdetails target with the listed attributes and values:

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      "carrierdetails": {
       "viewType": "XML",
       "transition": "slide",
       "viewLevel": 2,
       "controlAggregation": "midColumnPages",
       "viewName": "Detail",
       "viewId": "carrierdetails"
      }

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4. Delete the RouteList route. Then define a default route with the name masterlist. Assign the route to the masterlist and carrierdetails targets. In addition, set greedy to falseand set the titleTarget to an empty string.

   1. Replace the RouteList definition with the following code:

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      "routes": [
       {
       "name": "masterlist",
       "pattern": "",
       "titleTarget": "",
       "greedy": false,
       "target": [
       "masterlist"
       ] 
       }
      ]

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5. Create a new route with the name carrierdetails and assign the masterlist and carrierdetails targets to the route. Add the pattern Carriers/{objectId} to that route. In addition, set greedy to false and set the titleTarget to an empty string.

   1. Add the following code after the masterlist route definition:

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      ,
      {
       "name": "carrierdetails",
       "pattern": "Carriers/{objectId}",
       "titleTarget": "",
       "greedy": false,
       "target": [
       "masterlist",
       "carrierdetails"
       ]
      }

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6. Define a target with the name notFoundwith the listed attributes and values.

   notFound target

   Configuration Parameter	Value
   viewType	XML
   transition	slide
   controlAggregation	midColumnPages
   clearControlAggregation	true
   viewName	NotFound
   viewId	notFound

   1. Add the notFound target with the listed attributes and values after the carrierdetails target definition:

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      ,
      "notFound": {
       "viewType": "XML",
       "transition":"slide",
       "controlAggregation": "midColumnPages",
       "clearControlAggregation": true,
       "viewName": "NotFound",
       "viewId": "notFound"
      }

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7. Define a target with the name detailObjectNotFound with the listed attributes and values.

   detailObjectNotFound target

   Configuration Parameter	Value
   viewType	XML
   transition	slide
   controlAggregation	midColumnPages
   clearAggregation	true
   viewName	DetailObjectNotFound
   viewId	detailObjectNotFound

   1. Add the detailObjectNotFound target with the listed attributes and values after the notFound target definition:

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      ,
      "detailObjectNotFound": {
       "viewType": "XML",
       "transition":"slide",
       "controlAggregation": "midColumnPages",
       "clearControlAggregation": true,
       "viewName": "DetailObjectNotFound",
       "viewId": "detailObjectNotFound"
      }

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8. Extend the routing configuration in the descriptor by adding a bypassed property and setting its target to masterlist and notFound. Then save your changes.

   1. Add the bypassed property and set its target to list and notFound in the routing configuration by adding the following code at the end of the config definition:

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      "bypassed": {
       "target": [
       "masterlist",
       "notFound"
       ]
      }

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   2. Your implementation should look like the following code:

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      "routing": {
       "config": {
       "routerClass": "sap.m.routing.Router",
       "viewType": "XML",
       "async": true,
       "viewPath": "student00.com.sap.training.ux402.listdetail.ux402listdetail.view",
       "controlAggregation": "beginColumnPages",
       "controlId": "layout",
       "bypassed": {
       "target": [
       "masterlist",
       "notFound"
       ]
       }
       },
      
      

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   3. Save your changes.

9. Check if the init function of your component contains the router initialization. If this is not the case, initialize the router of your application.

   1. Open the Component.js file.

   2. Navigate to the init function.

   3. Ensure that the router is initialized:

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      init: function () {
       // call the base component's init function
       UIComponent.prototype.init.apply(this, arguments);
      
       // enable routing
       this.getRouter().initialize();
      
       // set the device model
       this.setModel(models.createDeviceModel(), "device");
      }
      
      

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In this task, you define the list view content for your application. The view will implement a sap.f.DynamicPage object. The page will show a list of Carriers fetched from the entity set UX_C_Carrier_TP.

1. Open the List.view.xml file, remove the page element and add the namespace sap.f with the XML-alias f.

   1. Update the code as follows:

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      <mvc:View controllerName="student##.com.sap.training.ux402.listdetail.ux402listdetail.controller.List"
       xmlns:mvc="sap.ui.core.mvc" displayBlock="true"
       xmlns="sap.m"
       xmlns:f="sap.f">

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2. Add an sap.f.DynamicPage element with sap.f.content-aggregation to the view with the following properties.

   Property	Value
   id	dynamicPageOverviewId
   headerExpanded	true
   toggleHeaderOnTitleClick	true

   1. Add the following code inside the View definition:

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      <f:DynamicPage id="dynamicPageOverviewId" headerExpanded="true" toggleHeaderOnTitleClick="true">
       <f:content>
      
       </f:content> 
      </f:DynamicPage> 
      

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3. Create an sap.m.List control inside the sap.f.content-Aggregation and assign the following values to the List element:

   Attribute-value Pairs for the sap.m.List Control 

   Attribute	Value
   id	list
   items	{/UX_C_Carrier_TP}
   busyIndicatorDelay	0
   growing	true
   growingThreshold	20
   growingScrollToLoad	true
   mode	{= ${device>/system/phone} ? 'None': 'SingleSelectMaster'}
   selectionChange	onSelect

   1. Add the following code inside the content aggregation:

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      <List id="list"
       items="{/UX_C_Carrier_TP}"
       busyIndicatorDelay="0"
       growing="true"
       growingThreshold="10"
       growingScrollToLoad="true"
       mode="{= ${device>/system/phone} ? 'None' : 'SingleSelectMaster'}"
       selectionChange="onSelect">
      
      </List>

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4. Add the items aggregation to the sap.m.List-control and add a control type of sap.m.ObjectListItem to the items-aggregation with the following attributes:

   Attribute-value Pairs for the sap.m.ObjectListItem Element

   Attribute	Value
   id	objectListItem
   title	{Carrname}
   intro	{Carrid}
   type	{= ${device>/system/phone} ? 'Active' : 'Inactive'}
   press	onSelect

   1. Extend your code with the following implementation inside the List element:

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      <items>
       <ObjectListItem
       id="objectListItem"
       title="{Carrname}"
       intro="{Carrid}"
       type="{= ${device>/system/phone} ? 'Active' : 'Inactive'}"
       press="onSelect">
       </ObjectListItem>
      </items>

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   2. Your implementation should now look like the following:

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      <mvc:View controllerName="student00.com.sap.training.ux402.listdetail.ux402listdetail.controller.List"
       xmlns:mvc="sap.ui.core.mvc" displayBlock="true"
       xmlns="sap.m"
       xmlns:f="sap.f">
       <f:DynamicPage id="dynamicPageOverviewId" headerExpanded="true" toggleHeaderOnTitleClick="true">
       <f:content> 
       <List id="list"
       items="{/UX_C_Carrier_TP}"
       busyIndicatorDelay="0"
       growing="true"
       growingThreshold="10"
       growingScrollToLoad="true"
       mode="{= ${device>/system/phone} ? 'None' : 'SingleSelectMaster'}"
       selectionChange="onSelect">
       <items>
       <ObjectListItem id="objectListItem"
       title="{Carrname}"
       intro="{Carrid}"
       type="{= ${device>/system/phone} ? 'Active' : 'Inactive'}"
       press="onSelect">
       </ObjectListItem>
       </items>
       </List> 
       </f:content>
       </f:DynamicPage>
      </mvc:View>
      
      

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In this task, you define the detail view content for your application. The view should show the details of the selected carrier using the sap.uxap.ObjectPageDynamicHeaderTitle element and sap.uxap.headerContent aggregation. The table that will be implemented shows the available flights for the selected carrier. 

1. Open the Detail.view.xml file, remove the page element and add the namespaces sap.uxap with the XML-alias ux and sap.ui.layout with the XML-alias layout.

   1. Update the code as follows:

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      <mvc:View controllerName="student##.com.sap.training.ux402.listdetail.ux402listdetail.controller.Detail"
       xmlns:mvc="sap.ui.core.mvc" displayBlock="true"
       xmlns="sap.m"
       xmlns:ux="sap.uxap"
       xmlns:layout="sap.ui.layout">

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2. Add an sap.uxap.ObjectPageLayout element to the view. Add the attribute id with the value objectPageLayout.

   1. Add the following code inside the View definition:

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      <ux:ObjectPageLayout id="objectPageLayout">
      
      </ux:ObjectPageLayout>

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3. Add an sap.uxap.headerTitle, sap.uxap.headerContent and sap.uxap.sections aggregation to the sap.uxap.ObjectPageLayout control.

   1. Add the following code inside the ObjectPageLayout element:

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      <ux:headerTitle>
      
      </ux:headerTitle>
      <ux:headerContent>
      
      </ux:headerContent>
      <ux:sections>
      
      </ux:sections>

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4. Add an sap.uxap.ObjectPageDynamicHeaderTitle control to the headerTitle aggregation. For the attribute id, add the value objectPageDynamicHeader.

   1. Add the following code inside the headerTitle element:

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      <ux:ObjectPageDynamicHeaderTitle id="objectPageDynamicHeader">
      
      </ux:ObjectPageDynamicHeaderTitle>

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5. Add an sap.uxap.expandedHeading aggregation to the sap.uxap.ObjectPageDynamicHeaderTitle control.

   1. Add the following code inside the ObjectPageDynamicHeaderTitle element:

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      <ux:expandedHeading>
      
      </ux:expandedHeading>

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6. Add an sap.m.Title control to the sap.uxap.expandedHeading aggregation with the listed attributes and values.

   Attribute-value Pairs for the sap.m.ObjectAttribute Elements

   Attribute	Value
   id	title1
   text	{Carrname}
   level	H2

   1. Add the following code inside the expandedHeading element:

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      <Title
      id="title1"
      text="{Carrname}"
      level="H2"/>

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   2. The headerTitlesection should now look like the following:

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      <ux:headerTitle>
       <ux:ObjectPageDynamicHeaderTitle id="objectPageDynamicHeader">
       <ux:expandedHeading>
       <Title id="title1"
       text="{Carrname}"
       level="H2"/>
       </ux:expandedHeading>
       </ux:ObjectPageDynamicHeaderTitle>
      </ux:headerTitle>
      
      

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7. Add an sap.m.FlexBox control to the sap.uxap.headerContent with the listed attributes and values.

   Attribute	Value
   id	flexbox
   warp	Wrap

   1. Add the following code inside the headerContent element: 

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      <FlexBox wrap="Wrap" id="flexBox">
      
      </FlexBox>

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8. Add an sap.f.Avatar and a sap.ui.layout.VerticalLayout control to the sap.m.Flex control with the listed attributes and values.

   Element	Attribute	Value
   1	id	avatar
   	src	sap-icon://flight
   2	id	verticallayout1
   	class	sapUiSmallMarginBeginEnd

   1. Add the following code inside the FlexBox element:

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      <Avatar id="avatar" src="sap-icon://flight"/>
      <layout:VerticalLayout id="verticalLayout1" class="sapUiSmallMarginBeginEnd">
      
      </layout:VerticalLayout>

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9. Add two sap.m.Label controls to the sap.ui.layout.VerticalLayout control with the listed attributes and values:

   Element	Attribute	Value
   1	id	label1
   	text	{Carrid}
   2	id	label2
   	text	{Url}

   1. Add the following code into the VerticalLayout element:

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      <Label id="label1" text="{Carrid}"/>
      <Label id="label2" text="{Url}"/>

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   2. Your code for the headerContent should now look like the following:

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      <ux:headerContent>
       <FlexBox wrap="Wrap" id="flexBox">
       <Avatar id="avatar" src="sap-icon://flight"/>
       <layout:VerticalLayout id="verticalLayout1" class="sapUiSmallMarginBeginEnd">
       <Label id="label1" text="{Carrid}"/>
       <Label id="label2" text="{Url}"/> 
       </layout:VerticalLayout> 
       </FlexBox>
      </ux:headerContent>
      
      

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10. Add an sap.uxap.ObjectPageSection control to thesap.uxap.sections aggregation. Add the value objectPageSection to the attribute id.

    1. Add the following code inside the sections element:

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       <ux:ObjectPageSection id="objectPageSection">
       
       </ux:ObjectPageSection>

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11. Add an sap.uxap.ObjectPageSubSection control to the sap.uxap.ObjectPageSection control. Add the value objectPageSubSection to the attribute id.

    1. Add the following code inside the ObjectPageSection element:

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       <ux:ObjectPageSubSection id="objectPageSubSection1">
       
       </ux:ObjectPageSubSection>

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12. Add ansap.m.Table control to the sap.uxap.ObjectPageSubSection aggregation and add the following attributes to the Table control:

    Attribute-value Pairs for the sap.m.Table Element 

    Attribute	Value
    id	table
    headerText	{i18n>tableHeaderText}
    items	{to_Connection}
    noDataText	{i18n>talbeNoDataText

    1. Add the following code inside the ObjectPageSubSection element:

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       <Table id="table" headerText="{i18n>tableHeaderText}" items="{to_Connection}" 
        noDataText="{i18n>tableNoDataText}">
       
       </Table>

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13. Add the columns aggregation to the Table control and add three sap.m.Column controls to the columns aggregation. For each control, assign the following attributes:

    Element	Attribute	Values
    1	id	column1
    2	id	column2
    3	id	column3

    1. Add the following code inside the Table element:

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       <columns>
        <Column id="column1">
        </Column>
        <Column id="column2">
        </Column>
        <Column id="column3">
        </Column>
        </columns>

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14. To each of the sap.m.Columns controls, add one sap.m.Text control and assign the following attributes:

    Attribute-value Pairs for the sap.m.Text Elements

    Element	Attribute	Value
    1	id	text1
    	text	{i18n>idColumnText}
    2	id	text2
    	text	{i18n>cityFromColumnText}
    3	id	text3
    	text	{i18n>cityToColumnText}

    1. Add the following code into the first column definition:

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       <Text id="text1" text="{i18n>idColumnText}"/>

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    2. Add the following code into the second column definition:

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       <Text id="text2" text="{i18n>cityFromColumnText}"/>

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    3. Add the following code into the third column definition:

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       <Text id="text3" text="{i18n>cityToColumnText}"/>

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15. Add the items aggregation to the Table element. 

    1. Add the following code after the columns aggregation:

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       <items>
       
       </items>

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16. Add an sap.m.ColumnListItem control to the items aggregation and add the value columnListItem to the attribute id.

    1. Add the following code inside the items aggregation:

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       <ColumnListItem id="columnListItem">
       
       </ColumnListItem>

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17. Add the cells aggregation to the ColumnListItem control. 

    1. Add the following code into the ColumnListItem element:

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       <cells>
       
       </cells>

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18. Add three sap.m.Text controls to the cells aggregation and add the following attributes and values to the Text elements.

    Element	Attribute	Value
    1	id	text4
    	text	{Carrid}
    2	id	text5
    	text	{Cityfrom}
    3	id	text6
    	text	{Cityto}

    1. Add the following code into the cells aggregation:

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       <Text id="text4" text="{Carrid}"/>
       <Text id="text5" text="{Cityfrom}"/>
       <Text id="text6" text="{Cityto}"/>
       

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    2. Your code for the sections aggregation should now look like the following:

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       <ux:sections>
        <ux:ObjectPageSection id="objectPageSection">
        <ux:ObjectPageSubSection id="objectPageSubSection1">
        <Table id="table" headerText="{i18n>tableHeaderText}" items="{to_Connection}" 
        noDataText="{i18n>tableNoDataText}">
        <columns>
        <Column id="column1">
        <Text id="text1" text="{i18n>idColumnText}"/>
        </Column>
        <Column id="column2">
        <Text id="text2" text="{i18n>cityFromColumnText}"/>
        </Column>
        <Column id="column3">
        <Text id="text3" text="{i18n>cityToColumnText}"/>
        </Column>
        </columns>
        <items>
        <ColumnListItem id="columnListItem">
        <cells>
        <Text id="text4" text="{Carrid}"/>
        <Text id="text5" text="{Cityfrom}"/>
        <Text id="text6" text="{Cityto}"/>
        </cells>
        </ColumnListItem>
        </items>
        </Table> 
        </ux:ObjectPageSubSection>
        </ux:ObjectPageSection> 
       </ux:sections>
       
       

       Expand

The NotFound view is displayed when the requested target was not found. Define the NotFound view content as a MessagePage.

1. Open the NotFound.view.xml file and remove the pageelement.

   1. Perform this step as shown in a previous exercise.

2. Add an sap.m.MessagePage element to the view and add the following attributes to the element:

   Attribute-value Pairs for the sap.m.MessagePage Element

   Attribute	Value
   id	notFoundMessagePage
   title	{i18n>notFoundTitle}
   text	{i18n>notFoundText}
   icon	sap-icon://document

   1. Update the code as follows:

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      <mvc:View controllerName="student##.com.sap.training.ux402.listdetail.ux402listdetail.controller.NotFound"
       xmlns:mvc="sap.ui.core.mvc" displayBlock="true"
       xmlns="sap.m">
       <MessagePage
       id="notFoundMessagePage"
       title="{i18n>notFoundTitle}"
       text="{i18n>notFoundText}"
       icon="sap-icon://document"
       >
       </MessagePage>
      </mvc:View>

      Expand

The DetailObjectNotFound view is displayed when the detail was not found. Define the DetailObjectNotFound view content as a MessagePage.

1. Open the DetailObjectNotFound.view.xml file and remove the page element.

   1. Perform this step as shown in a previous exercise.

2. Add an sap.m.MessagePage element to the view and add the following attributes to the element:

   Attribute-value Pairs for the sap.m.MessagePage Element

   Attribute	Value
   id	detailObjectNotFoundPage
   title	{i18n>detailTitle}
   text	{i18n>noObjectFoundText}
   icon	sap-icon://document

   1. Update the code as follows:

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      <mvc:View controllerName="student##.com.sap.training.ux402.listdetail.ux402listdetail.controller.DetailObjectNotFound"
      xmlns:mvc="sap.ui.core.mvc" displayBlock="true"
      xmlns="sap.m">
       <MessagePage
       id="detailObjectNotFoundPage"
       title="{i18n>detailTitle}"
       text="{i18n>noObjectFoundText}"
       icon="sap-icon://document"
       >
       </MessagePage>
      </mvc:View>

      Expand

In this task, you implement view synchronization by creating a class with the name ListSelector. The ListSelector implementation should be placed in the controller folder of your project.

1. In the controller folder, create a file with name ListSelector.js.

   1. Open the context menu of the controller folder and choose New File.

   2. Enter ListSelector.js and choose OK.

2. Derive the ListSelector from sap.ui.base.Object.

   1. Update the code as follows:

      Code snippet

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      sap.ui.define([
       "sap/ui/base/Object"
      ], function(BaseObject) {
      "use strict";
      
      return BaseObject.extend("student##.com.sap.training.ux402.listdetail.ux402listdetail.controller.ListSelector", 
       {
      
       });
      });
      

      Expand

3. Add a constructor function.

   1. Add a constructor function as follows:

      Code snippet

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      constructor : function () {
      }

      Expand

4. Inside the constructor function, create a Promise instance and assign the instance to a member variable called _oWhenListHasBeenSet. Pass an anonymous function to the Promise-constructor. The function should take an argument with the name fnResolveListHasBeenSet. Assign this argument to a public variable _fnResolveListHasBeenSet of function object. Make sure that the reference of the anonymous function points to the right object.

   1. Add the_oWhenListHasBeenSet variable as follows:

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      this._oWhenListHasBeenSet = new Promise(function (fnResolveListHasBeenSet) {
       this._fnResolveListHasBeenSet = fnResolveListHasBeenSet;
      }.bind(this));

      Expand

5. Create another Promise instance and assign the object to a member variable with the name oWhenListLoadingIsDone. The constructor function of the Promise should take an anonymous function with two arguments. Name the first argument fnResolve and the second fnReject. Make sure that the reference inside the promise points to the correct object.

   1. Add the oWhenListLoadingIsDonevariable as follows:

      Code snippet

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      this.oWhenListLoadingIsDone = new Promise(function (fnResolve, fnReject) {
      
      }.bind(this));

      Expand

6. Implement the anonymous function created in previous step in a way that when the _oWhenListHasBeenSet promise is resolved, an anonymous function with an oList parameter is called.

   1. Add the following code inside the Promise function of oWhenListLoadingIsDone:

      Code snippet

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      this._oWhenListHasBeenSet
       .then(function (oList) {
      
       });

      Expand

7. The oList object will contain a reference at runtime to a list of the List view. Register an event handler for the dataReceived event for the items binding. The event handler registered for that event should check whether data are received from the backend during binding or not. When no data received from a backend call the fnReject function point should be invoked. Pass a literal javascript object with a property list and a property error. Assign the oList list object to the list property and a true value to the error property.

   1. Add the following code after .then(function (oList) {:

      Code snippet

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      oList.getBinding("items").attachEventOnce("dataReceived",
       function (oData) {
       if (!oData.getParameter("data")) {
       fnReject({
       list : oList,
       error: true
       });
       }
       }

      Expand

8. Continue with the implementation and enhance the event handler for the dataReceived event. Check whether the list referenced by the oList object contains at least one item. If this is the case, call the function point, fnResolve. Pass a literal javascript object with a property list and a property firstListitem. Assign the oList list object to the list property and the first item of the list to the firstListitemproperty. If there is not at least one item in the list, call fnReject. Pass a literal javascript object with a property list and a property error. Assign the oList list object to the list property and a false value to the error property.

   1. Add the following code after the if statement closing bracket :

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      var oFirstListItem = oList.getItems()[0];
       if(oFirstListItem) {
       fnResolve({
       list: oList,
       oFirstListItem: oFirstListItem
       })
       }
       else {
       // No items in the list
       fnReject({
       list : oList,
       error: false
       });
       }

      Expand

   2. The complete implementation of the constructor function should look like the code in the following figure:

      Code snippet

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      constructor : function () {
      
       this._oWhenListHasBeenSet = new Promise(function (fnResolveListHasBeenSet) {
       this._fnResolveListHasBeenSet = fnResolveListHasBeenSet;
       }.bind(this));
      
       this.oWhenListLoadingIsDone = new Promise(function (fnResolve, fnReject) {
       this._oWhenListHasBeenSet
       .then(function (oList) {
       oList.getBinding("items").attachEventOnce("dataReceived",
       function (oData) {
       if (!oData.getParameter("data")) {
       fnReject({
       list : oList,
       error: true
       });
       }
       var oFirstListItem = oList.getItems()[0];
       if(oFirstListItem) {
       fnResolve({
       list: oList,
       oFirstListItem: oFirstListItem
      
       })
       }
       else {
       // No items in the list
       fnReject({
       list : oList,
       error: false
       });
       }
       }
       );
       });
       }.bind(this));
      }

      Expand

9. Implement a setBoundMasterList function. The function should take one argument named oList. Assign the oList parameter to a member variable named _oList and call the function pointer stored in _fnResolveListHasBeenSet. Pass the oList object to that function pointer.

   1. Add the following code after the constructor function:

      Code snippet

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      setBoundMasterList: function(oList) {
       this._oList = oList;
       this._fnResolveListHasBeenSet(oList);
      },

      Expand

10. Implement a function named selectAListItem. The function should take one argument named sBindingPath. The sBindingPath argument will contain the path to an item of the master list. The function should react when the oWhenListLoadingIsDone promise is resolved and should check whether the sBindingPath variable points to the same entity of the list that was already selected. If this, or the mode of the list, equals None, the processing should return to the caller. Otherwise, the item of the list should be selected.

    1. Implement the code for selectAListItem after the setBoundMasterListfunction, as follows:

       Code snippet

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       selectAListItem : function (sBindingPath) {
        this.oWhenListLoadingIsDone.then(
        function () {
        var oList = this._oList,
        oSelectedItem;
       
        if (oList.getMode() === "None") {
        return;
        }
       
        oSelectedItem = oList.getSelectedItem();
       
        // skip update if the current selection is already matching the object path
        if (oSelectedItem && oSelectedItem.getBindingContext().getPath() === sBindingPath) {
        return;
        }
       
        oList.getItems().some(function (oItem) {
        if (oItem.getBindingContext() && oItem.getBindingContext().getPath() === sBindingPath) {
        oList.setSelectedItem(oItem);
        return true;
        }
        });
        }.bind(this));
       },

       Expand

11. Implement a clearListSelection function. This function should reset the statuses selected at all items of the list. The deselection should be done when the promise stored in _oWhenListHasBeenSet is resolved. Then save your changes.

    1. Add the clearListSelectionfunction as follows:

       Code snippet

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       clearMasterListSelection: function() {
        this._oWhenListHasBeenSet.then(function() {
        this._oList.removeSelections(true);
        }.bind(this));
       }

       Expand

    2. Save your changes.

12. To make sure that the ListSelector can be referenced from each part of the application, we must create an instance of the ListSelector at a more global level. Therefore, create an instance of the ListSelector inside the Component.js file and make sure that the instance is a member variable of the component. Then save your changes.

    1. Open the Component.js file located in the controller folder of your project.

    2. Add a reference to the ListSelector in the Component.js file as follows:

       Code snippet

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       sap.ui.define([
        "sap/ui/core/UIComponent",
        "sap/ui/Device",
        "student##/com/sap/training/ux402/listdetail/ux402listdetail/model/models",
        "student##/com/sap/training/ux402/listdetail/ux402listdetail/controller/ListSelector"
       ],
       function (UIComponent, Device, models, ListSelector) {

       Expand

    3. In the init function of the Component, declare a member variable named oListSelector and assign an ListSelector instance to the variable. Then save your changes.

       Code snippet

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       // instantiation of the listselector
       this.oListSelector = new ListSelector();

       Expand

    4. You init function should now look like this:

       Code snippet

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       init: function () {
        // call the base component's init function
        UIComponent.prototype.init.apply(this, arguments);
       
        // instantiation of the listselector
        this.oListSelector = new ListSelector();
       
        // enable routing
        this.getRouter().initialize();
       
        // set the device model
        this.setModel(models.createDeviceModel(), "device");
       }
       
       

       Expand

In this task, you implement a base controller class .This class provides to all controllers some functionalities for reuse (for routing, view synchronization, and backward navigation).

1. Add a file named BaseController.js to the controller folder of your project.

   1. Open the context menu of the controller folder and choose New File.

   2. Enter BaseController.js and choose OK.

2. Derive a new class from sap.ui.core.mvc.Controller.

   1. Add the following code :

      Code snippet

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      sap.ui.define([
       "sap/ui/core/mvc/Controller"
      ], function (Controller) {
       "use strict";
       return Controller.extend("student##.com.sap.training.ux402.listdetail.ux402listdetail.controller.BaseController", {
      
       });
      });

      Expand

3. Add a reference to sap.ui.core.routing.History and pass the reference as History to the callback.

   1. Update the code as follows:

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      sap.ui.define([
       "sap/ui/core/mvc/Controller",
       "sap/ui/core/routing/History"
      ], function (Controller, History) {
      

      Expand

4. Implement a function named getRouter and return the router of the component.

   1. Add the following code inside the extend function :

      Code snippet

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      getRouter: function () {
       return this.getOwnerComponent().getRouter();
      },

      Expand

5. Implement a getListSelector function and return the reference of the oListSelector object from the component.

   1. Add the following code after the getRouterimplementation:

      Code snippet

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      getListSelector: function() {
       return this.getOwnerComponent().oListSelector;
      },

      Expand

6. Implement a getResourceBundle function and return a reference to the i18n model of the application.

   1. Add the following code after the getListSelector implementation :

      Code snippet

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      getResourceBundle: function () {
       return this.getOwnerComponent().getModel("i18n").getResourceBundle();
      },

      Expand

7. Implement a function named onNavBack. The function should navigate back to the master list using the masterlist route. Then save your changes.

   1. Add the following code after the getResourceBundle implementation:

      Code snippet

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      onNavBack: function() {
       var sPreviousHash = History.getInstance().getPreviousHash();
       if (sPreviousHash !== undefined) {
       // The history contains a previous entry
       history.go(-1);
       } else {
       // Otherwise we go backwards with a forward history
       var bReplace = true;
       this.getRouter().navTo("masterlist", {}, bReplace);
       }
      }

      Expand

   2. Save your changes. Your BaseController implementation should now look like the following:

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      sap.ui.define([
       "sap/ui/core/mvc/Controller",
       "sap/ui/core/routing/History"
      ], function (Controller, History) {
      "use strict";
      return Controller.extend("student00.com.sap.training.ux402.listdetail.ux402listdetail.controller.BaseController", {
       getRouter: function () {
       return this.getOwnerComponent().getRouter();
       },
      
       getListSelector: function() {
       return this.getOwnerComponent().oListSelector;
       },
      
       getResourceBundle: function () {
       return this.getOwnerComponent().getModel("i18n").getResourceBundle();
       },
      
       onNavBack: function() {
       var sPreviousHash = History.getInstance().getPreviousHash();
       if (sPreviousHash !== undefined) {
       // The history contains a previous entry
       history.go(-1);
       } else {
       // Otherwise we go backwards with a forward history
       var bReplace = true;
       this.getRouter().navTo("masterlist", {}, bReplace);
       }
       }
      });
      });

      Expand

In this task, you implement the controller of the App view to link the JSON model for layout to the Application.

1. Open the App.controller.js file. Define that the controller should be derived from the BaseController. Moreover, add sap/ui/model/JSONModel to the namespace.

   1. Open the App.controller.js file located in the controller folder of your project.

   2. Update the code as follows :

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   sap.ui.define(
    [
    "./BaseController",
    "sap/ui/model/json/JSONModel"
    ],
    function(BaseController, JSONModel) {
    "use strict";
   
    return BaseController.extend("student00.com.sap.training.ux402.listdetail.ux402listdetail.controller.App", {
    onInit() {
    
    }
    });
    }
   );

   Expand

2. Implement the onInit function. Create an JSON-Model with an attribute layout and assign the created Model to the App view.

   1. Add the following code into the onInit function:

      Code snippet

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       var oViewModel = new JSONModel({
       layout : "OneColumn"
       });
      
       this.getView().setModel(oViewModel, "mainView");

      Expand

In this task, you implement the controller of the List view for navigation.

1. Open the List.controller.js file. Define that the controller should be derived from the BaseController. Add a reference to the Device API of SAPUI5.

   1. Open the List.controller.js file located in the controller folder of your project.

   2. Update the code as follows:

      Code snippet

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      sap.ui.define([
       "student##/com/sap/training/ux402/listdetail/ux402listdetail/controller/BaseController",
       "sap/ui/Device"
      ],
      /**
      * @param {typeof sap.ui.core.mvc.Controller} Controller
      */
      function (Controller, Device) {
       "use strict";

      Expand

2. Implement a _navigateToCarrierDetails function. The function takes two arguments. Name the first argument sCarrierId and the second bReplace. The function should navigate to the carrierdetails route and pass a sCarrierId value as a parameter.

   1. Add the following code after the onInit function:

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      _navigateToCarrierDetails : function(sCarrierId,bReplace) {
       this.getRouter().navTo("carrierdetails", {
       objectId: sCarrierId
       }, bReplace);
      },

      Expand

3. Add a _showDetail function. The function takes one argument. Name the argument oItem. This variable will contain during runtime the item selected by the user from the master list. Read the property Carrid from the oItemand store it in a variable sCarrierId. Check also if the app is running on a mobile device or not. Store the result in a local variable bReplace. Invoke the _navigateToCarrierDetails function and pass both variables as an argument.

   1. After the _navigateToCarrierDetails implementation, add the _showDetail function with an oItem argument as follows:

      Code snippet

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      _showDetail: function(oItem) {
      
      },

      Expand

   2. Check whether the app is running on a mobile device or on a desktop and store the result in a local variable. Then read the Carrid property from the bindingContext of the oItem object and store it in a variable. Pass both variables to the _navigateToCarrierDetails function. Add the following code into the _showDetail function:

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      var bReplace = !Device.system.phone;
      var sCarrierId = oItem.getBindingContext().getProperty("Carrid");
      this._navigateToCarrierDetails(sCarrierId,bReplace);

      Expand

4. Implement the event handler for the select event of the list. The assign function to handle the event was called onSelect. Invoke the _showDetail method and pass the selected item to the function. The selection behavior of the table depends on whether the app is running on a mobile device or not.

   1. Add the following code after the _showDetail implementation:

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      onSelect: function(oEvent) {
       this._showDetail(oEvent.getParameter("listItem") || oEvent.getSource());
      },

      Expand

5. Implement an onBypassed function. This function should handle the case that when the router bypasses the target. Inside the function, invoke the removeSelections function on the list object.

   1. Add the following code after the onSelect implementation:

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      onBypassed: function() {
       this._oList.removeSelections(true);
      },

      Expand

6. Add an _onListMatched function to the implementation. The function takes no argument. The function will be called when the list route is invoked by the router. React on the case when the promise oWhenListLoadingIsDone is resolved. If the promise is resolved, the details of the first item from the master list should be displayed inside the details view. This should only be processed when the mode of list is not None.

   1. Add the following code after the onBypassed implementation :

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      _onListMatched: function() {
       this.getListSelector().oWhenListLoadingIsDone.then(
       function(mParams) {
       if (mParams.list.getMode() === "None") {
       return;
       }
       var sObjectId = mParams.firstListitem.getBindingContext().getProperty("Carrid");
       this._navigateToCarrierDetails(sObjectId,true);
       }.bind(this)
       );
      }

      Expand

7. Implement the onInit function. Get a reference to the master list of your view and store the reference in a variable named oList. Assign the reference to oList to a member variable named _oList. Add a eventhandler for onBeforeFirstShow of the view using addEventDelegate-function and invoke the setBoundMasterList of the ListSelector and pass the reference to the oList object to the function. Implement a behavior when the masterlist route is invoked by the router. If this is the case, the _onListMatched function should be invoked. Implement a behavior when the router bypasses the list route, register the onBypassed function when this event occurs. Then save your changes.

   1. Add the following code to the onInit function:

      Code snippet

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      var oList = this.byId("list");
      this._oList = oList;
      this.getView().addEventDelegate({
       onBeforeFirstShow: function () {
       this.getOwnerComponent().oListSelector.setBoundMasterList(this._oList);
       }.bind(this)
      }); 
      this.getRouter().getRoute("masterlist").attachPatternMatched(this._onListMatched, this);
      this.getRouter().attachBypassed(this.onBypassed, this);

      Expand

   2. Save your changes.

In this task, you implement the controller of the Detail view for navigation.

1. Open the Detail.controller.js file. Define that the controller should be derived from the BaseController and add a reference to the Device API of SAPUI5.

   1. Open the Detail.controller.js file located in the controller folder of your project.

   2. Update the code as follows:

      Code snippet

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      sap.ui.define([
       "student##/com/sap/training/ux402/listdetail/ux402listdetail/controller/BaseController",
       "sap/ui/Device"
      ],
      /**
      * @param {typeof sap.ui.core.mvc.Controller} Controller
      */
      function (Controller, Device) {
       "use strict";

      Expand

2. Define a function named _onBindingChange. The function should check whether the view is bound to an entity or not. If not, a target with the name detailObjectNotFound should be displayed and the selection on the master list should be cleared. To clear the selection, call the function clearListSelection on the ListSelector. If the view is bound to an entity, get the binding path of the entity and invoke the selectAListItem function from the ListSelector. Pass the binding path as an argument.

   1. Add the following code after the onInit function:

      Code snippet

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      _onBindingChange: function() {
       var oView = this.getView();
       var oElementBinding = oView.getElementBinding();
       if (!oElementBinding.getBoundContext()) {
       this.getRouter().getTargets().display("detailObjectNotFound");
       this.getOwnerComponent().oListSelector.clearMasterListSelection();
       return;
       }
       var sPath = oElementBinding.getPath();
       this.getOwnerComponent().oListSelector.selectAListItem(sPath);
      },

      Expand

3. Implement a function named _bindView. The function takes one argument named sObjectPath. The variable contains the path to the selected Object from the master list. Update the binding of the view using the bindElement function. Pass a literal object to the bindElement function. Add a property named path to the literal object and assign the sObjectPath variable to the property. Then add an events property to the literal object. Assign another literal object to the events property. Define three attributes to the events object. The first property is called change. Assign the reference to the function _onBindingChangeto the property. Add a property dataRequested and dataReceived. Assign a function to each property. Implement the function for dataRequested and show that the view is busy. Implement the function for dataReceived and hide the busy indicator for the view.

   1. Add the following code after the _onBindingChange implementation:

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      _bindView: function(sObjectPath) {
       var oView = this.getView();
      
       this.getView().bindElement({
       path: sObjectPath,
       events: {
       change: this._onBindingChange.bind(this),
       dataRequested: function() {
       oView.setBusy(true);
       },
       dataReceived: function() {
       oView.setBusy(false);
       }
       }
       });
      },

      Expand

4. Implement a function named _onObjectMatched. This function is an event handler function for the Pattern-Matched event during navigation. Read the navigation property objectId from the events arguments and call the _bindView function of the controller. Pass the objectId to the function. In addition, change the layout attribute of the mainView Model to TwoColumnsMidExpanded to adjust the layout behavior of your sap.f.flexibleColumnLayout.

   1. Add the following code after the _bindView implementation:

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      _onObjectMatched: function(oEvent) {
       this.getView().getModel("mainView").setProperty("/layout", "TwoColumnsMidExpanded");
       var sObjectPath =
       "/UX_C_Carrier_TP('" + oEvent.getParameter("arguments").objectId + "')";
       this._bindView(sObjectPath);
      }

      Expand

5. Implement the onInit function. Register the _onObjectMatched event handler for the pattern matching event of the carrierdetails route. Then save your changes.

   1. Update the code of the onInit function as follows:

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      onInit: function () {
       this.getRouter().getRoute("carrierdetails").attachPatternMatched(this._onObjectMatched, this);
      },

      Expand

   2. Save your changes.

In this task, you implement the controller of the NotFound view.

1. Open the NotFound.controller.js file. Define that the controller should be derived from the BaseController. In addition, delete the onInit function. Then save your changes.

   1. Open the NotFound.controller.js file located in the controller folder of your project.

   2. Update the code as follows:

      Code snippet

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      sap.ui.define([
       "student##/com/sap/training/ux402/listdetail/ux402listdetail/controller/BaseController"
      
      ],
      /**
      * @param {typeof sap.ui.core.mvc.Controller} Controller
      */
      function (Controller) {
       "use strict";
      
       return Controller.extend("student00.com.sap.training.ux402.listdetail.ux402listdetail.controller.NotFound", {
      
       });
      });

      Expand

   3. Save your changes.

In this task, you implement the controller of the DetailObjectNotFound view.

1. Open the DetailObjectNotFound.controller.js file. Define that the controller should be derived from the BaseController. In addition, delete the onInit function. Then save your changes.

   1. Open the DetailObjectNotFound.controller.js file located in the controller folder of your project.

   2. Update the code as follows:

      Code snippet

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      sap.ui.define([
       "student##/com/sap/training/ux402/listdetail/ux402listdetail/controller/BaseController"
      ],
      /**
      * @param {typeof sap.ui.core.mvc.Controller} Controller
      */
      function (Controller) {
      "use strict";
      
       return Controller.extend("student00.com.sap.training.ux402.listdetail.ux402listdetail.controller.DetailObjectNotFound", {
      
       });
      });

      Expand

   3. Save your changes.

1. Test your application. Choose a carrier to see the corresponding connections.

   

   1. Perform this step as shown in a previous exercise.

2. Try to navigate to a hash for which no route exists. The NotFound view should be displayed.

   

   1. Change the URL in your browser to something not corresponding to a route, for example Carrier/AA instead of Carriers/AA.

3. Try to navigate to a hash for which a route exists, but also to the object key for which no suitable detail object can be loaded. The DetailObjectNotFound view should be displayed.

   

   1. Change the URL in your browser so that the Carrier id is not known, for example enter Carriers/XX.