Examples of org.eclipse.ui.contexts.IContextActivation

org.eclipse.ui.contexts.IContextActivation

A token representing the activation of a context. This token can later be used to cancel that activation. Without this token, then context will only become inactive if the component in which the context was activated is destroyed.

This interface is not intended to be implemented or extended by clients.
@since 3.1 @see org.eclipse.ui.ISources @see org.eclipse.ui.ISourceProvider

      return;
    }


    Iterator c = fLocalActivations.keySet().iterator();
    while (c.hasNext()) {
      IContextActivation activation = (IContextActivation) c.next();
      super.doActivateContext(activation);
    }
    fActive = true;
  }

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   * @see org.eclipse.ui.contexts.IContextService#activateContext(java.lang.String,
   *      org.eclipse.core.expressions.Expression)
   */
  public final IContextActivation activateContext(final String contextId,
      final Expression expression) {
    final IContextActivation activation = new ContextActivation(contextId,
        expression, this);
    contextAuthority.activateContext(activation);
    return activation;
  }

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   * @see org.eclipse.ui.contexts.IContextService#deactivateContexts(java.util.Collection)
   */
  public final void deactivateContexts(final Collection activations) {
    final Iterator activationItr = activations.iterator();
    while (activationItr.hasNext()) {
      final IContextActivation activation = (IContextActivation) activationItr
          .next();
      deactivateContext(activation);
    }
  }

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   *      org.eclipse.core.expressions.Expression, boolean)
   */
  public IContextActivation activateContext(String contextId,
      Expression expression, boolean global) {
    if (global) {
      IContextActivation activation = fParentService.activateContext(
          contextId, expression, global);
      fParentActivations.add(activation);
      return activation;
    }
    AndExpression andExpression = null;

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   * (non-Javadoc)
   * 
   * @see org.eclipse.ui.contexts.IContextService#deactivateContext(org.eclipse.ui.contexts.IContextActivation)
   */
  public void deactivateContext(IContextActivation activation) {
    IContextActivation parentActivation = null;
    if (fLocalActivations.containsKey(activation)) {
      parentActivation = (IContextActivation) fLocalActivations
          .remove(activation);
    } else {
      parentActivation = activation;

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   * @param expression
   *            the expression to use
   * @return the activated context
   */
  protected IContextActivation doActivateContext(IContextActivation activation) {
    IContextActivation parentActivation = fParentService.activateContext(
        activation.getContextId(), activation.getExpression());
    fParentActivations.add(parentActivation);
    fLocalActivations.put(activation, parentActivation);
    return activation;
  }

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       */
      oldActivations = (Collection) registeredWindows.get(null);
      if (oldActivations != null) {
        final Iterator oldActivationItr = oldActivations.iterator();
        while (oldActivationItr.hasNext()) {
          final IContextActivation activation = (IContextActivation) oldActivationItr
              .next();
          deactivateContext(activation);
        }
      }
    }


    /*
     * If the new active shell is recognized as a dialog by default, then
     * create some submissions, remember them, and submit them for
     * processing.
     */
    if ((newShell != null) && (!newShell.isDisposed())) {
      final Collection newActivations;


      if ((newShell.getParent() != null)
          && (registeredWindows.get(newShell) == null)) {
        // This is a dialog by default.
        newActivations = new ArrayList();
        final Expression expression = new ActiveShellExpression(
            newShell);
        final IContextActivation dialogWindowActivation = new ContextActivation(
            IContextService.CONTEXT_ID_DIALOG_AND_WINDOW,
            expression, contextService);
        activateContext(dialogWindowActivation);
        newActivations.add(dialogWindowActivation);
        final IContextActivation dialogActivation = new ContextActivation(
            IContextService.CONTEXT_ID_DIALOG, expression,
            contextService);
        activateContext(dialogActivation);
        newActivations.add(dialogActivation);
        registeredWindows.put(null, newActivations);

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   *         <code>false</code> otherwise.
   */
  private final boolean containsActive(final Collection activations) {
    final Iterator activationItr = activations.iterator();
    while (activationItr.hasNext()) {
      final IContextActivation activation = (IContextActivation) activationItr
          .next();
      if (evaluate(activation)) {
        return true;
      }
    }

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        if (contextActivations.isEmpty()) {
          contextActivationsByContextId.remove(contextId);
          updateContext(contextId, false);


        } else if (contextActivations.size() == 1) {
          final IContextActivation remainingActivation = (IContextActivation) contextActivations
              .iterator().next();
          contextActivationsByContextId.put(contextId,
              remainingActivation);
          updateContext(contextId, evaluate(remainingActivation));

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      }


      // Look for the right type of context id.
      final Iterator activationItr = activations.iterator();
      while (activationItr.hasNext()) {
        final IContextActivation activation = (IContextActivation) activationItr
            .next();
        final String contextId = activation.getContextId();
        if (contextId == IContextService.CONTEXT_ID_DIALOG) {
          return IContextService.TYPE_DIALOG;
        } else if (contextId == IContextService.CONTEXT_ID_WINDOW) {
          return IContextService.TYPE_WINDOW;
        }

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Related Classes of org.eclipse.ui.contexts.IContextActivation

org.eclipse.ui.internal.ActionSetManager

org.eclipse.ui.internal.contexts.ContextAuthority

org.eclipse.ui.internal.contexts.ContextService

org.eclipse.ui.internal.contexts.NestableContextService

org.eclipse.ui.internal.contexts.SlaveContextService

org.eclipse.ui.internal.contexts.WorkbenchContextSupport

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