Examples of com.google.gwt.user.client.ui.AbstractImagePrototype

com.google.gwt.user.client.ui.AbstractImagePrototype
An opaque representation of a particular image such that the image can be accessed either as an HTML fragment or as an {@link Image} object. An imageprotype can be thought of as an abstract image factory with additional capabilities.
The {@link #applyTo(Image)} method provides an efficient way to replace thecontents of an existing Image. This is useful in cases where an image changes its appearance based on a user's action. Instead of creating two Image objects then alternately hiding/showing them, one can use the {@link #applyTo(Image)} method of twoAbstractImagePrototype objects to transform a single Image object between two (or more) visual representations. The use of AbstractImagePrototypes results in an cleaner and more efficient implementation.

This class is also a useful way to encapsulate complex HTML that represents an image without actually instantiating Image objects. When constructing large HTML fragments, especially those that contain many images, {@link #getHTML()} can be much more efficient.


    int level = ts.getDepth(model);


    String id = getId(tree, model, property, rowIndex, colIndex);
    String text = getText(tree, model, property, rowIndex, colIndex);
    AbstractImagePrototype icon = calculateIconStyle(tree, model, property, rowIndex, colIndex);
    Joint j = calcualteJoint(tree, model, property, rowIndex, colIndex);


    return tree.getTreeView().getWidgetTemplate(model, id, text, icon, false, j, level - 1);
  }

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    TreeNode node = findNode(model);
    return node.isLeaf() ? Joint.NONE : node.expanded ? Joint.EXPANDED : Joint.COLLAPSED;
  }


  protected AbstractImagePrototype calculateIconStyle(M model) {
    AbstractImagePrototype style = null;
    if (iconProvider != null) {
      AbstractImagePrototype iconStyle = iconProvider.getIcon(model);
      if (iconStyle != null) {
        return iconStyle;
      }
    }
    TreeNode node = findNode(model);

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   * @param rangeItems the range items
   */
  public void setRangeItems(List<RangeItem> rangeItems) {
    this.rangeItems = rangeItems;
    removeAll();
    AbstractImagePrototype icon = null;
    for (RangeItem item : rangeItems) {
      NumberField field = new NumberField() {
        @Override
        protected void onKeyUp(FieldEvent fe) {
          super.onKeyUp(fe);

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        window.setHeight(360);
        window.setGlassEnabled(true);




        ImageResource icon = MessageCenterView.getSeverityIcon(msg.getSeverity());
        AbstractImagePrototype prototype = AbstractImagePrototype.create(icon);


        SafeHtmlBuilder html = new SafeHtmlBuilder();


        // TODO: XSS prevention?
        html.appendHtmlConstant(prototype.getHTML());
        html.appendHtmlConstant("&nbsp;");
        html.appendHtmlConstant(msg.getFired().toString());
        html.appendHtmlConstant("<h3>");
        html.appendHtmlConstant(msg.getConciseMessage());
        html.appendHtmlConstant("</h3>");

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        window.setHeight(360);
        window.setGlassEnabled(true);




        ImageResource icon = MessageCenterView.getSeverityIcon(msg.getSeverity());
        AbstractImagePrototype prototype = AbstractImagePrototype.create(icon);


        SafeHtmlBuilder html = new SafeHtmlBuilder();


        // TODO: XSS prevention?
        html.appendHtmlConstant(prototype.getHTML());
        html.appendHtmlConstant("&nbsp;");
        html.appendHtmlConstant(msg.getFired().toString());
        html.appendHtmlConstant("<h3 id='consise-message'>");
        html.appendHtmlConstant(msg.getConciseMessage());
        html.appendHtmlConstant("</h3>");

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        window.setHeight(360);
        window.setGlassEnabled(true);




        ImageResource icon = MessageCenterView.getSeverityIcon(msg.getSeverity());
        AbstractImagePrototype prototype = AbstractImagePrototype.create(icon);


        SafeHtmlBuilder html = new SafeHtmlBuilder();


        // TODO: XSS prevention?
        html.appendHtmlConstant(prototype.getHTML());
        html.appendHtmlConstant("&nbsp;");
        html.appendHtmlConstant(msg.getFired().toString());
        html.appendHtmlConstant("<h3>");
        html.appendHtmlConstant(msg.getConciseMessage());
        html.appendHtmlConstant("</h3>");

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        window.setHeight(360);
        window.setGlassEnabled(true);




        ImageResource icon = MessageCenterView.getSeverityIcon(msg.getSeverity());
        AbstractImagePrototype prototype = AbstractImagePrototype.create(icon);


        SafeHtmlBuilder html = new SafeHtmlBuilder();


        html.appendHtmlConstant(prototype.getHTML());
        html.appendHtmlConstant("&nbsp;");
        html.appendEscaped(msg.getFired().toString());
        html.appendHtmlConstant("<h3>"+msg.getConciseMessage()+"</h3>");
        html.appendHtmlConstant("<p/>");

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            SafeHtmlBuilder safeHtmlBuilder)
    {




        ImageResource icon = MessageCenterView.getSeverityIcon(message.getSeverity());
        AbstractImagePrototype prototype = AbstractImagePrototype.create(icon);


        String cssName = (context.getIndex() %2 > 0) ? "message-list-item message-list-item-odd" : "message-list-item";


        safeHtmlBuilder.appendHtmlConstant("<table width='100%' cellpadding=4 cellspacing=0><tr valign='middle'>");
        safeHtmlBuilder.appendHtmlConstant("<td width=16>");
        safeHtmlBuilder.appendHtmlConstant(prototype.getHTML());
        safeHtmlBuilder.appendHtmlConstant("</td><td width='100%'>");
        String actualMessage = message.getConciseMessage().length()>30 ? message.getConciseMessage().substring(0, 30)+" ..." : message.getConciseMessage();
        safeHtmlBuilder.append(TEMPLATE.message(cssName, actualMessage));
        safeHtmlBuilder.appendHtmlConstant("</td></tr></table>");

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    private static Images              images          = (Images) GWT.create( Images.class );
    private static final String        HTML_ERROR_ICON = makeImage( images.error() );
    private static final String        HTML_INFO_ICON  = makeImage( images.information() );


    private static String makeImage(ImageResource resource) {
        AbstractImagePrototype prototype = AbstractImagePrototype.create( resource );
        return prototype.getHTML();
    }

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   * @param rangeItems the range items
   */
  public void setRangeItems(List<RangeItem> rangeItems) {
    this.rangeItems = rangeItems;
    removeAll();
    AbstractImagePrototype icon = null;
    for (RangeItem item : rangeItems) {
      NumberField field = new NumberField() {
        @Override
        protected void onKeyUp(FieldEvent fe) {
          super.onKeyUp(fe);

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