Package org.eclipse.wst.sse.ui.internal.selection

Examples of org.eclipse.wst.sse.ui.internal.selection.SelectionHistory

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public class StructuredSelectHistoryHandler extends AbstractHandler {

  public Object execute(ExecutionEvent event) throws ExecutionException {
    IEditorPart editor = HandlerUtil.getActiveEditor(event);
    SelectionHistory history = (SelectionHistory) editor.getAdapter(SelectionHistory.class);
    if (history != null) {
      IRegion old = history.getLast();
      if (old != null) {
        try {
          history.ignoreSelectionChanges();

          ITextEditor textEditor = null;
          if (editor instanceof ITextEditor)
            textEditor = (ITextEditor) editor;
          else {
            Object o = editor.getAdapter(ITextEditor.class);
            if (o != null)
              textEditor = (ITextEditor) o;
          }
          if (textEditor != null)
            textEditor.selectAndReveal(old.getOffset(), old.getLength());
        }
        finally {
          history.listenToSelectionChanges();
        }
      }
    }
    return null;
  }
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    else if (IVerticalRuler.class.equals(required)) {
      return getVerticalRuler();
    }
    else if (SelectionHistory.class.equals(required)) {
      if (fSelectionHistory == null)
        fSelectionHistory = new SelectionHistory(this);
      result = fSelectionHistory;
    }
    else if (IResource.class.equals(required)) {
      IEditorInput input = getEditorInput();
      if (input != null) {
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    else if (IVerticalRuler.class.equals(required)) {
      return getVerticalRuler();
    }
    else if (SelectionHistory.class.equals(required)) {
      if (fSelectionHistory == null)
        fSelectionHistory = new SelectionHistory(this);
      result = fSelectionHistory;
    }
    else if (IResource.class.equals(required)) {
      IEditorInput input = getEditorInput();
      if (input != null) {
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          // determine new selection based on current indexed region
          Region newSelectionRegion = getNewSelectionRegion(cursorIndexedRegion, textSelection);

          // select new selection
          if (newSelectionRegion != null) {
            SelectionHistory history = (SelectionHistory) editor.getAdapter(SelectionHistory.class);
            if (history != null) {
              history.remember(new Region(textSelection.getOffset(), textSelection.getLength()));
              try {
                history.ignoreSelectionChanges();
                textEditor.selectAndReveal(newSelectionRegion.getOffset(), newSelectionRegion.getLength());
              }
              finally {
                history.listenToSelectionChanges();
              }
            }
          }
        }
      }
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Related Classes of org.eclipse.wst.sse.ui.internal.selection.SelectionHistory

  • org.eclipse.jface.text.IRegion
  • org.eclipse.jface.viewers.ISelectionChangedListener
  • org.eclipse.wst.sse.ui.internal.handlers.AbstractStructuredSelectHandler
  • org.eclipse.wst.sse.ui.internal.handlers.StructuredSelectHistoryHandler
  • org.eclipse.wst.sse.ui.StructuredTextEditor
  • java.util.Iterator
  • java.util.ArrayList
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