Examples of org.eclipse.jface.text.contentassist.IContentAssistant

Package org.eclipse.jface.text.contentassist

Examples of org.eclipse.jface.text.contentassist.IContentAssistant

org.eclipse.jface.text.contentassist.IContentAssistant
An IContentAssistant provides support on interactive content completion. The content assistant is a {@link org.eclipse.jface.text.ITextViewer} add-on. Itspurpose is to propose, display, and insert completions of the content of the text viewer's document at the viewer's cursor position. In addition to handle completions, a content assistant can also be requested to provide context information. Context information is shown in a tool tip like popup. As it is not always possible to determine the exact context at a given document offset, a content assistant displays the possible contexts and requests the user to choose the one whose information should be displayed.
A content assistant has a list of {@link org.eclipse.jface.text.contentassist.IContentAssistProcessor}objects each of which is registered for a particular document content type. The content assistant uses the processors to react on the request of completing documents or presenting context information.

In order to provide backward compatibility for clients of IContentAssistant, extension interfaces are used to provide a means of evolution. The following extension interfaces exist:
- {@link org.eclipse.jface.text.contentassist.IContentAssistantExtension} since version 3.0 introducingthe following functions:
  - handle documents with multiple partitions
  - insertion of common completion prefixes
- {@link org.eclipse.jface.text.contentassist.IContentAssistantExtension2} since version 3.2 introducingthe following functions:
  - repeated invocation (cycling) mode
  - completion listeners
  - a local status line for the completion popup
  - control over the behavior when no proposals are available
- {@link org.eclipse.jface.text.contentassist.IContentAssistantExtension3} since version 3.2 introducingthe following function:
  - a key-sequence to listen for in repeated invocation mode
- {@link org.eclipse.jface.text.contentassist.IContentAssistantExtension4} since version 3.4 introducingthe following function:
  - allows to get a handler for the given command identifier
The interface can be implemented by clients. By default, clients use {@link org.eclipse.jface.text.contentassist.ContentAssistant} as the standardimplementer of this interface.
@see org.eclipse.jface.text.ITextViewer @see org.eclipse.jface.text.contentassist.IContentAssistProcessor

    else if (EditorPreferenceNames.CODEASSIST_PROPOSALS_BACKGROUND.equals(property)) {
      ISourceViewer sourceViewer = getSourceViewer();
      if (sourceViewer != null) {
        SourceViewerConfiguration configuration = getSourceViewerConfiguration();
        if (configuration != null) {
          IContentAssistant contentAssistant = configuration.getContentAssistant(sourceViewer);
          if (contentAssistant instanceof ContentAssistant) {
            ContentAssistant assistant = (ContentAssistant) contentAssistant;
            RGB rgb = PreferenceConverter.getColor(getPreferenceStore(), EditorPreferenceNames.CODEASSIST_PROPOSALS_BACKGROUND);
            Color color = EditorUtility.getColor(rgb);
            assistant.setProposalSelectorBackground(color);
          }
        }
      }
    }


    // update content assist preferences
    else if (EditorPreferenceNames.CODEASSIST_PROPOSALS_FOREGROUND.equals(property)) {
      ISourceViewer sourceViewer = getSourceViewer();
      if (sourceViewer != null) {
        SourceViewerConfiguration configuration = getSourceViewerConfiguration();
        if (configuration != null) {
          IContentAssistant contentAssistant = configuration.getContentAssistant(sourceViewer);
          if (contentAssistant instanceof ContentAssistant) {
            ContentAssistant assistant = (ContentAssistant) contentAssistant;
            RGB rgb = PreferenceConverter.getColor(getPreferenceStore(), EditorPreferenceNames.CODEASSIST_PROPOSALS_FOREGROUND);
            Color color = EditorUtility.getColor(rgb);
            assistant.setProposalSelectorForeground(color);
          }
        }
      }
    }


    // update content assist preferences
    else if (EditorPreferenceNames.CODEASSIST_PARAMETERS_BACKGROUND.equals(property)) {
      ISourceViewer sourceViewer = getSourceViewer();
      if (sourceViewer != null) {
        SourceViewerConfiguration configuration = getSourceViewerConfiguration();
        if (configuration != null) {
          IContentAssistant contentAssistant = configuration.getContentAssistant(sourceViewer);
          if (contentAssistant instanceof ContentAssistant) {
            ContentAssistant assistant = (ContentAssistant) contentAssistant;
            RGB rgb = PreferenceConverter.getColor(getPreferenceStore(), EditorPreferenceNames.CODEASSIST_PARAMETERS_BACKGROUND);
            Color color = EditorUtility.getColor(rgb);
            assistant.setContextInformationPopupBackground(color);
            assistant.setContextSelectorBackground(color);
          }
        }
      }
    }


    // update content assist preferences
    else if (EditorPreferenceNames.CODEASSIST_PARAMETERS_FOREGROUND.equals(property)) {
      ISourceViewer sourceViewer = getSourceViewer();
      if (sourceViewer != null) {
        SourceViewerConfiguration configuration = getSourceViewerConfiguration();
        if (configuration != null) {
          IContentAssistant contentAssistant = configuration.getContentAssistant(sourceViewer);
          if (contentAssistant instanceof ContentAssistant) {
            ContentAssistant assistant = (ContentAssistant) contentAssistant;
            RGB rgb = PreferenceConverter.getColor(getPreferenceStore(), EditorPreferenceNames.CODEASSIST_PARAMETERS_FOREGROUND);
            Color color = EditorUtility.getColor(rgb);
            assistant.setContextInformationPopupForeground(color);

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        if (fReconciler instanceof StructuredRegionProcessor)
          ((StructuredRegionProcessor) fReconciler).setDocument(getDocument());
      }
    }


    IContentAssistant newAssistant = configuration.getContentAssistant(this);
    if (newAssistant != fContentAssistant || newAssistant == null || fContentAssistant == null) {
      if (fContentAssistant != null)
        fContentAssistant.uninstall();


      fContentAssistant = newAssistant;

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    else if (EditorPreferenceNames.CODEASSIST_PROPOSALS_BACKGROUND.equals(property)) {
      ISourceViewer sourceViewer = getSourceViewer();
      if (sourceViewer != null) {
        SourceViewerConfiguration configuration = getSourceViewerConfiguration();
        if (configuration != null) {
          IContentAssistant contentAssistant = configuration.getContentAssistant(sourceViewer);
          if (contentAssistant instanceof ContentAssistant) {
            ContentAssistant assistant = (ContentAssistant) contentAssistant;
            RGB rgb = PreferenceConverter.getColor(getPreferenceStore(), EditorPreferenceNames.CODEASSIST_PROPOSALS_BACKGROUND);
            Color color = EditorUtility.getColor(rgb);
            assistant.setProposalSelectorBackground(color);
          }
        }
      }
    }


    // update content assist preferences
    else if (EditorPreferenceNames.CODEASSIST_PROPOSALS_FOREGROUND.equals(property)) {
      ISourceViewer sourceViewer = getSourceViewer();
      if (sourceViewer != null) {
        SourceViewerConfiguration configuration = getSourceViewerConfiguration();
        if (configuration != null) {
          IContentAssistant contentAssistant = configuration.getContentAssistant(sourceViewer);
          if (contentAssistant instanceof ContentAssistant) {
            ContentAssistant assistant = (ContentAssistant) contentAssistant;
            RGB rgb = PreferenceConverter.getColor(getPreferenceStore(), EditorPreferenceNames.CODEASSIST_PROPOSALS_FOREGROUND);
            Color color = EditorUtility.getColor(rgb);
            assistant.setProposalSelectorForeground(color);
          }
        }
      }
    }


    // update content assist preferences
    else if (EditorPreferenceNames.CODEASSIST_PARAMETERS_BACKGROUND.equals(property)) {
      ISourceViewer sourceViewer = getSourceViewer();
      if (sourceViewer != null) {
        SourceViewerConfiguration configuration = getSourceViewerConfiguration();
        if (configuration != null) {
          IContentAssistant contentAssistant = configuration.getContentAssistant(sourceViewer);
          if (contentAssistant instanceof ContentAssistant) {
            ContentAssistant assistant = (ContentAssistant) contentAssistant;
            RGB rgb = PreferenceConverter.getColor(getPreferenceStore(), EditorPreferenceNames.CODEASSIST_PARAMETERS_BACKGROUND);
            Color color = EditorUtility.getColor(rgb);
            assistant.setContextInformationPopupBackground(color);
            assistant.setContextSelectorBackground(color);
          }
        }
      }
    }


    // update content assist preferences
    else if (EditorPreferenceNames.CODEASSIST_PARAMETERS_FOREGROUND.equals(property)) {
      ISourceViewer sourceViewer = getSourceViewer();
      if (sourceViewer != null) {
        SourceViewerConfiguration configuration = getSourceViewerConfiguration();
        if (configuration != null) {
          IContentAssistant contentAssistant = configuration.getContentAssistant(sourceViewer);
          if (contentAssistant instanceof ContentAssistant) {
            ContentAssistant assistant = (ContentAssistant) contentAssistant;
            RGB rgb = PreferenceConverter.getColor(getPreferenceStore(), EditorPreferenceNames.CODEASSIST_PARAMETERS_FOREGROUND);
            Color color = EditorUtility.getColor(rgb);
            assistant.setContextInformationPopupForeground(color);

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        if (fReconciler instanceof StructuredRegionProcessor)
          ((StructuredRegionProcessor) fReconciler).setDocument(getDocument());
      }
    }


    IContentAssistant newAssistant = configuration.getContentAssistant(this);
    if (newAssistant != fContentAssistant || newAssistant == null || fContentAssistant == null) {
      if (fContentAssistant != null)
        fContentAssistant.uninstall();


      fContentAssistant = newAssistant;

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    }
    return fConfiguredContentTypes;
  }
  
  public IContentAssistant getContentAssistant(ISourceViewer sourceViewer) {
    final IContentAssistant assistant = super.getContentAssistant(sourceViewer);
    if (assistant instanceof ContentAssistant) {
      ((ContentAssistant) assistant).enableAutoInsert(XMLUIPlugin.getInstance().getPreferenceStore().getBoolean(XMLUIPreferenceNames.INSERT_SINGLE_SUGGESTION));
    }
    return assistant;
  }

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 *             org.eclipse.jface.text.quickassist.IQuickAssistProcessor;
 */
public class CorrectionAssistantProviderXML extends CorrectionAssistantProvider {


  public IContentAssistant getCorrectionAssistant(ISourceViewer sourceViewer) {
    IContentAssistant ca = null;


    if (sourceViewer != null) {
      ContentAssistant assistant = new ContentAssistant();


      if (sourceViewer != null) {

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   * (org.eclipse.jface.util.PropertyChangeEvent)
   */
  protected void handlePreferenceStoreChanged(PropertyChangeEvent event) {
    JDISourceViewer isv = (JDISourceViewer) getSourceViewer();
    if (isv != null) {
      IContentAssistant assistant = isv.getContentAssistant();
      if (assistant instanceof ContentAssistant) {
        JDIContentAssistPreference.changeConfiguration(
            (ContentAssistant) assistant, event);
      }
      SourceViewerConfiguration configuration = getSourceViewerConfiguration();

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    /**
     * @see IPropertyChangeListener#propertyChange(PropertyChangeEvent)
     */
    public void propertyChange(PropertyChangeEvent event) {
        IContentAssistant assistant = getContentAssistant();
        String property = event.getProperty();


        if (JFaceResources.TEXT_FONT.equals(property)) {
            updateViewerFont();
        }

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      }


      public IContentAssistant getContentAssistant(ISourceViewer viewer) {
        if (!viewer.isEditable())
          return null;
        IContentAssistant assistant = createContentAssistant(viewer);
        // Add content assist proposal handler if assistant exists
        if (assistant != null)
          contentAssistActionHandler = createContentAssistActionHandler(sourceViewer);
        return assistant;
      }

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      return;
    }
    fViewerConfiguration = configuration;


    PHPStructuredTextViewerConfiguration phpConfiguration = (PHPStructuredTextViewerConfiguration) configuration;
    IContentAssistant newPHPAssistant = phpConfiguration
        .getPHPContentAssistant(this, true);


    // Uninstall content assistant created in super:
    if (fContentAssistant != null) {
      fContentAssistant.uninstall();

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