Example usage for org.apache.wicket.request.resource ResourceReference.UrlAttributes getLocale

Introduction

In this page you can find the example usage for org.apache.wicket.request.resource ResourceReference.UrlAttributes getLocale.

Prototype

public Locale getLocale() 

Source Link

Usage

From source file:name.martingeisse.wicket.component.sprite.SpriteImage.java

License:Open Source License

@Override
protected void onComponentTag(ComponentTag tag) {

    // check for allowed tags
    final String originalTagName = tag.getName();
    if (!originalTagName.equalsIgnoreCase("img") && !originalTagName.equalsIgnoreCase("span")
            && !originalTagName.equalsIgnoreCase("div")) {
        String msg = String.format(
                "Component [%s] (path = [%s]) must be applied to a tag of type IMG, SPAN or DIV, not: %s",
                getId(), getPath(), tag.toUserDebugString());
        findMarkupStream().throwMarkupException(msg);
    }/*w  w  w.j a  va 2 s  .  c o m*/

    // make the image generate its resource reference (e.g. from a specified path), ignoring the tag name for now
    try {
        tag.setName("img");
        super.onComponentTag(tag);
    } finally {
        tag.setName(originalTagName);
    }

    // localize the resource reference (including a fallback mechanism for nonexisting resource files)
    ResourceReference resourceReference = getImageResourceReference();
    ResourceReference.UrlAttributes urlAttributes = resourceReference.getUrlAttributes();
    ResourceReference.Key spriteKey = new ResourceReference.Key(resourceReference.getScope().getName(),
            resourceReference.getName(), urlAttributes.getLocale(), urlAttributes.getStyle(),
            urlAttributes.getVariation());

    // look up the sprite and fall back to default behavior if not found
    ApplicationSpriteSupport applicationSpriteSupport = ApplicationSpriteSupport.get(getApplication());
    if (applicationSpriteSupport == null) {
        super.onComponentTag(tag);
        return;
    }
    SpriteRegistry spriteRegistry = applicationSpriteSupport.getSpriteRegistry();
    SpriteReference spriteReference = spriteRegistry.lookup(spriteKey);
    if (spriteReference == null) {
        super.onComponentTag(tag);
        return;
    }

    // IMG tags cannot handle CSS sprites. They're inline, so we convert to a SPAN.
    if (tag.getName().equalsIgnoreCase("img")) {
        tag.setName("span");
    }

    // remove the SRC attribute -- it doesn't hurt, but it's ugly
    tag.getAttributes().remove("src");

    // prepare modification of the style attribute
    StringBuilder styleBuilder;
    String previousStyle = tag.getAttribute("style");
    if (previousStyle == null) {
        styleBuilder = new StringBuilder();
    } else {
        styleBuilder = new StringBuilder(previousStyle).append("; ");
    }

    // SPAN tags must be styled as inline-block to support width/height properly
    if (tag.getName().equalsIgnoreCase("span")) {
        styleBuilder.append("display: inline-block; ");
    }

    // modify the style attribute according to the sprite reference
    styleBuilder.append("background-image: url(").append(spriteReference.getAtlas().getUrl());
    styleBuilder.append("); background-position: -").append(spriteReference.getX());
    styleBuilder.append("px -").append(spriteReference.getY());
    styleBuilder.append("px; width: ").append(spriteReference.getWidth());
    styleBuilder.append("px; height: ").append(spriteReference.getHeight());
    styleBuilder.append("px; ");

    // store modified style
    tag.getAttributes().put("style", styleBuilder.toString());

}

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From source file:name.martingeisse.wicketbits.sprite.SpriteImage.java

License:Open Source License

@Override
protected void onComponentTag(ComponentTag tag) {

    // check for allowed tags
    final String originalTagName = tag.getName();
    if (!originalTagName.equalsIgnoreCase("img") && !originalTagName.equalsIgnoreCase("span")
            && !originalTagName.equalsIgnoreCase("div")) {
        String msg = String.format(
                "Component [%s] (path = [%s]) must be applied to a tag of type IMG, SPAN or DIV, not: %s",
                getId(), getPath(), tag.toUserDebugString());
        findMarkupStream().throwMarkupException(msg);
    }//from www .  ja  v a 2s . c om

    // make the image generate its resource reference (e.g. from a specified path), ignoring the tag name for now
    try {
        tag.setName("img");
        super.onComponentTag(tag);
    } finally {
        tag.setName(originalTagName);
    }

    // localize the resource reference (including a fallback mechanism for nonexisting resource files)
    ResourceReference resourceReference = getImageResourceReference();
    ResourceReference.UrlAttributes urlAttributes = resourceReference.getUrlAttributes();
    ResourceReference.Key spriteKey = new ResourceReference.Key(resourceReference.getScope().getName(),
            resourceReference.getName(), urlAttributes.getLocale(), urlAttributes.getStyle(),
            urlAttributes.getVariation());

    // look up the sprite and fall back to default behavior if not found
    SpriteRegistry spriteRegistry = ApplicationSpriteSupport.get(getApplication()).getSpriteRegistry();
    SpriteReference spriteReference = spriteRegistry.lookup(spriteKey);
    if (spriteReference == null) {
        super.onComponentTag(tag);
        return;
    }

    // IMG tags cannot handle CSS sprites. They're inline, so we convert to a SPAN.
    if (tag.getName().equalsIgnoreCase("img")) {
        tag.setName("span");
    }

    // remove the SRC attribute -- it doesn't hurt, but it's ugly
    tag.getAttributes().remove("src");

    // prepare modification of the style attribute
    StringBuilder styleBuilder;
    String previousStyle = tag.getAttribute("style");
    if (previousStyle == null) {
        styleBuilder = new StringBuilder();
    } else {
        styleBuilder = new StringBuilder(previousStyle).append("; ");
    }

    // SPAN tags must be styled as inline-block to support width/height properly
    if (tag.getName().equalsIgnoreCase("span")) {
        styleBuilder.append("display: inline-block; ");
    }

    // modify the style attribute according to the sprite reference
    styleBuilder.append("background-image: url(").append(spriteReference.getAtlas().getUrl());
    styleBuilder.append("); background-position: -").append(spriteReference.getX());
    styleBuilder.append("px -").append(spriteReference.getY());
    styleBuilder.append("px; width: ").append(spriteReference.getWidth());
    styleBuilder.append("px; height: ").append(spriteReference.getHeight());
    styleBuilder.append("px; ");

    // store modified style
    tag.getAttributes().put("style", styleBuilder.toString());

}

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