Custom Component (composant personnalisé) custom-component

$ cd aem-guides-wknd
$ git checkout tutorial/custom-component-start

$ mvn clean install -PautoInstallSinglePackage

$ mvn clean install -PautoInstallSinglePackage -Pclassic

<?xml version="1.0" encoding="UTF-8"?>
    <jcr:root xmlns:sling="http://sling.apache.org/jcr/sling/1.0" xmlns:cq="http://www.day.com/jcr/cq/1.0" xmlns:jcr="http://www.jcp.org/jcr/1.0"
    jcr:primaryType="cq:Component"
    jcr:title="Byline"
    jcr:description="Displays a contributor's byline."
    componentGroup="WKND Sites Project - Content"
    sling:resourceSuperType="core/wcm/components/image/v2/image"/>

<!--/* byline.html */-->
<div data-sly-use.placeholderTemplate="core/wcm/components/commons/v1/templates.html">
</div>
<sly data-sly-call="${placeholderTemplate.placeholder @ isEmpty=true}"></sly>

<?xml version="1.0" encoding="UTF-8"?>
<jcr:root xmlns:sling="http://sling.apache.org/jcr/sling/1.0" xmlns:cq="http://www.day.com/jcr/cq/1.0" xmlns:jcr="http://www.jcp.org/jcr/1.0" xmlns:nt="http://www.jcp.org/jcr/nt/1.0"
        jcr:primaryType="nt:unstructured"
        jcr:title="Byline"
        sling:resourceType="cq/gui/components/authoring/dialog">
    <content
            jcr:primaryType="nt:unstructured"
            sling:resourceType="granite/ui/components/coral/foundation/container">
        <items jcr:primaryType="nt:unstructured">
            <tabs
                    jcr:primaryType="nt:unstructured"
                    sling:resourceType="granite/ui/components/coral/foundation/tabs"
                    maximized="{Boolean}false">
                <items jcr:primaryType="nt:unstructured">
                    <asset
                            jcr:primaryType="nt:unstructured"
                            sling:hideResource="{Boolean}false"/>
                    <metadata
                            jcr:primaryType="nt:unstructured"
                            sling:hideResource="{Boolean}true"/>
                    <properties
                            jcr:primaryType="nt:unstructured"
                            jcr:title="Properties"
                            sling:resourceType="granite/ui/components/coral/foundation/container"
                            margin="{Boolean}true">
                        <items jcr:primaryType="nt:unstructured">
                            <columns
                                    jcr:primaryType="nt:unstructured"
                                    sling:resourceType="granite/ui/components/coral/foundation/fixedcolumns"
                                    margin="{Boolean}true">
                                <items jcr:primaryType="nt:unstructured">
                                    <column
                                            jcr:primaryType="nt:unstructured"
                                            sling:resourceType="granite/ui/components/coral/foundation/container">
                                        <items jcr:primaryType="nt:unstructured">
                                            <name
                                                    jcr:primaryType="nt:unstructured"
                                                    sling:resourceType="granite/ui/components/coral/foundation/form/textfield"
                                                    emptyText="Enter the contributor's name to display."
                                                    fieldDescription="The contributor's name to display."
                                                    fieldLabel="Name"
                                                    name="./name"
                                                    required="{Boolean}true"/>
                                            <occupations
                                                    jcr:primaryType="nt:unstructured"
                                                    sling:resourceType="granite/ui/components/coral/foundation/form/multifield"
                                                    fieldDescription="A list of the contributor's occupations."
                                                    fieldLabel="Occupations"
                                                    required="{Boolean}false">
                                                <field
                                                        jcr:primaryType="nt:unstructured"
                                                        sling:resourceType="granite/ui/components/coral/foundation/form/textfield"
                                                        emptyText="Enter an occupation"
                                                        name="./occupations"/>
                                            </occupations>
                                        </items>
                                    </column>
                                </items>
                            </columns>
                        </items>
                    </properties>
                </items>
            </tabs>
        </items>
    </content>
</jcr:root>

<?xml version="1.0" encoding="UTF-8"?>
<jcr:root xmlns:sling="http://sling.apache.org/jcr/sling/1.0" xmlns:granite="http://www.adobe.com/jcr/granite/1.0" xmlns:cq="http://www.day.com/jcr/cq/1.0" xmlns:jcr="http://www.jcp.org/jcr/1.0" xmlns:nt="http://www.jcp.org/jcr/nt/1.0"
    jcr:primaryType="nt:unstructured"
    jcr:title="Byline"
    sling:resourceType="cq/gui/components/authoring/dialog">
    <content
            jcr:primaryType="nt:unstructured">
        <items jcr:primaryType="nt:unstructured">
            <tabs
                    jcr:primaryType="nt:unstructured">
                <items jcr:primaryType="nt:unstructured">
                    <properties
                            jcr:primaryType="nt:unstructured">
                        <items jcr:primaryType="nt:unstructured">
                            <content
                                    jcr:primaryType="nt:unstructured">
                                <items jcr:primaryType="nt:unstructured">
                                    <decorative
                                            jcr:primaryType="nt:unstructured"
                                            sling:hideResource="{Boolean}true"/>
                                    <altValueFromDAM
                                            jcr:primaryType="nt:unstructured"
                                            sling:hideResource="{Boolean}true"/>
                                    <titleValueFromDAM
                                            jcr:primaryType="nt:unstructured"
                                            sling:hideResource="{Boolean}true"/>
                                    <displayCaptionPopup
                                            jcr:primaryType="nt:unstructured"
                                            sling:hideResource="{Boolean}true"/>
                                    <disableUuidTracking
                                            jcr:primaryType="nt:unstructured"
                                            sling:hideResource="{Boolean}true"/>
                                </items>
                            </content>
                        </items>
                    </properties>
                    <features
                            jcr:primaryType="nt:unstructured">
                        <items jcr:primaryType="nt:unstructured">
                            <content
                                    jcr:primaryType="nt:unstructured">
                                <items jcr:primaryType="nt:unstructured">
                                    <accordion
                                            jcr:primaryType="nt:unstructured">
                                        <items jcr:primaryType="nt:unstructured">
                                            <orientation
                                                    jcr:primaryType="nt:unstructured"
                                                    sling:hideResource="{Boolean}true"/>
                                            <crop
                                                    jcr:primaryType="nt:unstructured"
                                                    sling:hideResource="{Boolean}true"/>
                                        </items>
                                    </accordion>
                                </items>
                            </content>
                        </items>
                    </features>
                </items>
            </tabs>
        </items>
    </content>
</jcr:root>

<dependency>
    <groupId>com.adobe.aem</groupId>
    <artifactId>aem-sdk-api</artifactId>
</dependency>

...
    <dependency>
        <groupId>com.adobe.aem</groupId>
        <artifactId>uber-jar</artifactId>
        <classifier>apis</classifier>
    </dependency>
...

 <!-- Core Component Dependency -->
    <dependency>
        <groupId>com.adobe.cq</groupId>
        <artifactId>core.wcm.components.core</artifactId>
    </dependency>

package com.adobe.aem.guides.wknd.core.models;

import java.util.List;

/**
* Represents the Byline AEM Component for the WKND Site project.
**/
public interface Byline {
    /***
    * @return a string to display as the name.
    */
    String getName();

    /***
    * Occupations are to be sorted alphabetically in a descending order.
    *
    * @return a list of occupations.
    */
    List<String> getOccupations();

    /***
    * @return a boolean if the component has enough content to display.
    */
    boolean isEmpty();
}

@Version("2.1.0")
package com.adobe.aem.guides.wknd.core.models;

import org.osgi.annotation.versioning.Version;

package com.adobe.aem.guides.wknd.core.models.impl;
import java.util.List;
import com.adobe.aem.guides.wknd.core.models.Byline;

public class BylineImpl implements Byline {

    @Override
    public String getName() {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public List<String> getOccupations() {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public boolean isEmpty() {
        // TODO Auto-generated method stub
        return false;
    }
}

import org.apache.sling.api.SlingHttpServletRequest;
import org.apache.sling.models.annotations.Model;
import org.apache.sling.models.annotations.DefaultInjectionStrategy;
...
@Model(
        adaptables = {SlingHttpServletRequest.class},
        adapters = {Byline.class},
        resourceType = {BylineImpl.RESOURCE_TYPE},
        defaultInjectionStrategy = DefaultInjectionStrategy.OPTIONAL
)
public class BylineImpl implements Byline {
    protected static final String RESOURCE_TYPE = "wknd/components/byline";
    ...
}

import com.adobe.cq.wcm.core.components.models.Image;
...
private Image getImage() {
    Image image = null;
    // Figure out how to populate the image variable!
    return image;
}

import org.apache.sling.models.factory.ModelFactory;
import org.apache.sling.models.annotations.injectorspecific.OSGiService;
...
public class BylineImpl implements Byline {
    ...
    @OSGiService
    private ModelFactory modelFactory;
}

modelFactory.getModelFromWrappedRequest(SlingHttpServletRequest request, Resource resource, java.lang.Class<T> targetClass)

import org.apache.sling.models.annotations.injectorspecific.Self;
...
@Self
private SlingHttpServletRequest request;

import javax.annotation.PostConstruct;
...
public class BylineImpl implements Byline {
    ...
    private Image image;

    @PostConstruct
    private void init() {
        image = modelFactory.getModelFromWrappedRequest(request,
                                                        request.getResource(),
                                                        Image.class);
    }
    ...
}

/**
    * @return the Image Sling Model of this resource, or null if the resource cannot create a valid Image Sling Model.
*/
private Image getImage() {
    return image;
}

@Override
public boolean isEmpty() {
   final Image componentImage = getImage();

    if (StringUtils.isBlank(name)) {
        // Name is missing, but required
        return true;
    } else if (occupations == null || occupations.isEmpty()) {
        // At least one occupation is required
        return true;
    } else if (componentImage == null || StringUtils.isBlank(componentImage.getSrc())) {
        // A valid image is required
        return true;
    } else {
        // Everything is populated, so this component is not considered empty
        return false;
    }
}

package com.adobe.aem.guides.wknd.core.models.impl;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import javax.annotation.PostConstruct;
import org.apache.commons.lang3.StringUtils;
import org.apache.sling.api.SlingHttpServletRequest;
import org.apache.sling.models.annotations.DefaultInjectionStrategy;
import org.apache.sling.models.annotations.Model;
import org.apache.sling.models.annotations.injectorspecific.OSGiService;
import org.apache.sling.models.annotations.injectorspecific.Self;
import org.apache.sling.models.annotations.injectorspecific.ValueMapValue;
import org.apache.sling.models.factory.ModelFactory;
import com.adobe.aem.guides.wknd.core.models.Byline;
import com.adobe.cq.wcm.core.components.models.Image;

@Model(
        adaptables = {SlingHttpServletRequest.class},
        adapters = {Byline.class},
        resourceType = {BylineImpl.RESOURCE_TYPE},
        defaultInjectionStrategy = DefaultInjectionStrategy.OPTIONAL
)
public class BylineImpl implements Byline {
    protected static final String RESOURCE_TYPE = "wknd/components/byline";

    @Self
    private SlingHttpServletRequest request;

    @OSGiService
    private ModelFactory modelFactory;

    @ValueMapValue
    private String name;

    @ValueMapValue
    private List<String> occupations;

    private Image image;

    /**
    * @PostConstruct is immediately called after the class has been initialized
    * but BEFORE any of the other public methods.
    * It is a good method to initialize variables that is used by methods in the rest of the model
    *
    */
    @PostConstruct
    private void init() {
        // set the image object
        image = modelFactory.getModelFromWrappedRequest(request, request.getResource(), Image.class);
    }

    @Override
    public String getName() {
        return name;
    }

    @Override
    public List<String> getOccupations() {
        if (occupations != null) {
            Collections.sort(occupations);
            return new ArrayList<String>(occupations);
        } else {
            return Collections.emptyList();
        }
    }

    @Override
    public boolean isEmpty() {
        final Image componentImage = getImage();

        if (StringUtils.isBlank(name)) {
            // Name is missing, but required
            return true;
        } else if (occupations == null || occupations.isEmpty()) {
            // At least one occupation is required
            return true;
        } else if (componentImage == null || StringUtils.isBlank(componentImage.getSrc())) {
            // A valid image is required
            return true;
        } else {
            // Everything is populated, so this component is not considered empty
            return false;
        }
    }

    /**
    * @return the Image Sling Model of this resource, or null if the resource cannot create a valid Image Sling Model.
    */
    private Image getImage() {
        return image;
    }
}

<div data-sly-use.placeholderTemplate="core/wcm/components/commons/v1/templates.html"
    class="cmp-byline">
        <div class="cmp-byline__image">
            <!--/* Include the Core Components Image Component */-->
        </div>
        <h2 class="cmp-byline__name"><!--/* Include the name */--></h2>
        <p class="cmp-byline__occupations"><!--/* Include the occupations */--></p>
</div>
<sly data-sly-call="${placeholderTemplate.placeholder @ isEmpty=true}"></sly>

<div data-sly-use.byline="com.adobe.aem.guides.wknd.core.models.Byline"
    data-sly-use.placeholderTemplate="core/wcm/components/commons/v1/templates.html"
    class="cmp-byline">
    ...
</div>

<h2 class="cmp-byline__name">${byline.name}</h2>

<p class="cmp-byline__occupations">${byline.occupations @ join=', '}</p>

 <div data-sly-use.byline="com.adobe.aem.guides.wknd.core.models.Byline"
      data-sly-use.placeholderTemplate="core/wcm/components/commons/v1/templates.html"
      data-sly-test.hasContent="${!byline.empty}"
      class="cmp-byline">
      ...
</div>

<sly data-sly-call="${placeholderTemplate.placeholder @ isEmpty=!hasContent}"></sly>

<div class="cmp-byline__image"
    data-sly-resource="${ '.' @ resourceType = 'core/wcm/components/image/v2/image' }"></div>

<!--/* byline.html */-->
<div data-sly-use.byline="com.adobe.aem.guides.wknd.core.models.Byline"
    data-sly-use.placeholderTemplate="core/wcm/components/commons/v1/templates.html"
    data-sly-test.hasContent="${!byline.empty}"
    class="cmp-byline">
    <div class="cmp-byline__image"
        data-sly-resource="${ '.' @ resourceType = 'core/wcm/components/image/v2/image' }">
    </div>
    <h2 class="cmp-byline__name">${byline.name}</h2>
    <p class="cmp-byline__occupations">${byline.occupations @ join=', '}</p>
</div>
<sly data-sly-call="${placeholderTemplate.placeholder @ isEmpty=!hasContent}"></sly>

$ cd aem-guides-wknd/ui.apps
$ mvn clean install -PautoInstallPackage

$ cd ../core
$ mvn clean install -PautoInstallBundle

$ cd ../core
$ mvn clean install -PautoInstallBundle -Pclassic

.cmp-byline {
    $imageSize: 60px;

    .cmp-byline__image {
        float: left;

    /* This class targets a Core Component Image CSS class */
    .cmp-image__image {
        width: $imageSize;
        height: $imageSize;
        border-radius: $imageSize / 2;
        object-fit: cover;
        }
    }

    .cmp-byline__name {
        font-size: $font-size-medium;
        font-family: $font-family-serif;
        padding-top: 0.5rem;
        margin-left: $imageSize + 25px;
        margin-bottom: .25rem;
        margin-top:0rem;
    }

    .cmp-byline__occupations {
        margin-left: $imageSize + 25px;
        color: $gray;
        font-size: $font-size-xsmall;
        text-transform: uppercase;
    }
}

$ cd ui.frontend/
$ npm run watch