Examples of org.eclipse.core.runtime.IConfigurationElement

org.eclipse.core.runtime.IConfigurationElement
A configuration element, with its attributes and children, directly reflects the content and structure of the extension section within the declaring plug-in's manifest (plugin.xml) file.
This interface also provides a way to create executable extension objects.

These registry objects are intended for relatively short-term use. Clients that deal with these objects must be aware that they may become invalid if the declaring plug-in is updated or uninstalled. If this happens, all methods except {@link #isValid()} will throw {@link InvalidRegistryObjectException}. For configuration element objects, the most common case is code in a plug-in dealing with extensions contributed to one of the extension points it declares. Code in a plug-in that has declared that it is not dynamic aware (or not declared anything) can safely ignore this issue, since the registry would not be modified while it is active. However, code in a plug-in that declares that it is dynamic aware must be careful when accessing the extension and configuration element objects because they become invalid if the contributing plug-in is removed. Similarly, tools that analyze or display the extension registry are vulnerable. Client code can pre-test for invalid objects by calling {@link #isValid()}, which never throws this exception. However, pre-tests are usually not sufficient because of the possibility of the extension or configuration element object becoming invalid as a result of a concurrent activity. At-risk clients must treat InvalidRegistryObjectException as if it were a checked exception. Also, such clients should probably register a listener with the extension registry so that they receive notification of any changes to the registry.
This interface can be used without OSGi running.
This interface is not intended to be implemented by clients.

      final IConfigurationElement[] configurationElements,
      final int configurationElementCount) {
    final List warningsToLog = new ArrayList(1);


    for (int i = 0; i < configurationElementCount; i++) {
      final IConfigurationElement element = configurationElements[i];


      // Read the viewer contribution identifier.
      final String id = readRequired(element, ATT_ID, warningsToLog,
          "Viewer contributions need an id"); //$NON-NLS-1$
      if (id == null) {

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    if (keywordReferences == null) {
      IConfigurationElement[] references = getConfigurationElement()
          .getChildren(TAG_KEYWORD_REFERENCE);
      HashSet list = new HashSet(references.length);
      for (int i = 0; i < references.length; i++) {
        IConfigurationElement page = references[i];
        String id = page.getAttribute(IWorkbenchRegistryConstants.ATT_ID);
        if (id != null) {
          list.add(id);
        }
      }

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      String id = configElements[i].getAttribute(IWorkbenchRegistryConstants.ATT_ID);
      
      // Define the initial URI spec
      String uriSpec = "toolbar:" + id; //$NON-NLS-1$
      if (configElements[i].getChildren(TAG_LOCATION).length > 0) {
        IConfigurationElement location = configElements[i].getChildren(TAG_LOCATION)[0];
        if (location.getChildren(TAG_ORDER).length > 0) {
          IConfigurationElement order = location.getChildren(TAG_ORDER)[0];
          
          String pos = order.getAttribute(IWorkbenchRegistryConstants.ATT_POSITION);
          String relTo = order.getAttribute(IWorkbenchRegistryConstants.ATT_RELATIVE_TO);
          uriSpec += "?" + pos + "=" + relTo; //$NON-NLS-1$ //$NON-NLS-2$
          
          // HACK! We expect that the new trim group is -always- relative to
          // one of the 'default' groups; indicating which trim area they're in
          MenuLocationURI uri = new MenuLocationURI("toolbar:" + relTo); //$NON-NLS-1$

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   * @return <code>true</code> iff the group is positioned at the start
   * (or 'before') the entry that it is relative to. Default is true
   * 
   */
  public boolean isAtStart() {
    IConfigurationElement location = additionElement.getChildren(IWorkbenchRegistryConstants.TAG_LOCATION)[0];
    if (location.getChildren(IWorkbenchRegistryConstants.TAG_ORDER).length > 0) {
      IConfigurationElement order = location.getChildren(IWorkbenchRegistryConstants.TAG_ORDER)[0];
      
      String pos = order.getAttribute(IWorkbenchRegistryConstants.ATT_POSITION);
      if (pos != null)
        return (pos.equals("start") | pos.equals("before"));  //$NON-NLS-1$//$NON-NLS-2$
    }
    return true;
  }

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   */
  public boolean fillMajor(IConfigurationElement widgetElement) {
    if (widgetElement.getChildren(IWorkbenchRegistryConstants.TAG_LAYOUT).length==0) {
      return false;
    }
    IConfigurationElement layout = widgetElement.getChildren(IWorkbenchRegistryConstants.TAG_LAYOUT)[0];
    String fillMajorVal = layout.getAttribute(IWorkbenchRegistryConstants.ATT_FILL_MAJOR);


    return (fillMajorVal != null && fillMajorVal.equals("true")); //$NON-NLS-1$
  }

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   */
  public boolean fillMinor(IConfigurationElement widgetElement) {
    if (widgetElement.getChildren(IWorkbenchRegistryConstants.TAG_LAYOUT).length==0) {
      return false;
    }
    IConfigurationElement layout = widgetElement.getChildren(IWorkbenchRegistryConstants.TAG_LAYOUT)[0];
    String fillMinorVal = layout.getAttribute(IWorkbenchRegistryConstants.ATT_FILL_MINOR);


    return (fillMinorVal != null && fillMinorVal.equals("true")); //$NON-NLS-1$
  }

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      if (!IWorkbenchRegistryConstants.TAG_WIDGET.equals(widgetElements[i].getName()))
        continue;
      
      // Define the initial URI spec
      if (widgetElements[i].getChildren(IWorkbenchRegistryConstants.TAG_LOCATION).length > 0) {
        IConfigurationElement location = widgetElements[i].getChildren(IWorkbenchRegistryConstants.TAG_LOCATION)[0];
        if (location.getChildren(IWorkbenchRegistryConstants.TAG_BAR).length > 0) {
          IConfigurationElement bar = location.getChildren(IWorkbenchRegistryConstants.TAG_BAR)[0];


          // The bar's path represents the 'group' it should go into
          String path = bar.getAttribute(IWorkbenchRegistryConstants.ATT_PATH);
          if (path != null && path.equals(getId()))
              widgetConfigs.add(widgetElements[i]);
        }
      }
    }

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    // Get the widget config elements for this 'group'
    List widgetConfigs = getWidgetConfigs();
    for (Iterator iterator = widgetConfigs.iterator(); iterator
        .hasNext();) {
      IConfigurationElement widgetCE = (IConfigurationElement) iterator.next();
      
      // skip elements that are known to fail
      if (failedWidgets.containsKey(widgetCE))
        continue;

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          editorDelegate = (IEditorActionDelegate) delegate;
        } else if ("org.eclipse.ui.viewActions".equals(name) //$NON-NLS-1$
            && delegate instanceof IViewActionDelegate) {
          viewDelegate = (IViewActionDelegate) delegate;
        } else if ("org.eclipse.ui.popupMenus".equals(name)) { //$NON-NLS-1$
          IConfigurationElement parent = (IConfigurationElement) element
              .getParent();
          if ("objectContribution".equals(parent.getName()) //$NON-NLS-1$
              && delegate instanceof IObjectActionDelegate) {
            objectDelegate = (IObjectActionDelegate) delegate;
          } else if (viewId == null
              && delegate instanceof IEditorActionDelegate) {
            editorDelegate = (IEditorActionDelegate) delegate;

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      if (product.getId().equals(productId) && targetId[0] == null) { // we
        // found the target ID
        targetId[0] = configurationElement
            .getAttribute(IWorkbenchRegistryConstants.ATT_SPLASH_ID);
        // check all currently located splashes
        IConfigurationElement splashElement = (IConfigurationElement) idToSplash
            .get(targetId[0]);
        if (splashElement != null)
          return create(splashElement);
      }
    }

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