Example usage for org.eclipse.jface.viewers TreeViewer removeTreeListener

Introduction

In this page you can find the example usage for org.eclipse.jface.viewers TreeViewer removeTreeListener.

Prototype

public void removeTreeListener(ITreeViewerListener listener) 

Source Link

Document

Removes a listener for expand and collapse events in this viewer.

Usage

From source file:eu.geclipse.ui.providers.GridModelContentProvider.java

License:Open Source License

/**
 * Called when a new tree viewer was set and/or an old viewer
 * was unset.//from   ww  w  .  j a  v  a 2s .  c  o m
 * 
 * @param oldViewer The old viewer.
 * @param newViewer The new viewer.
 */
protected void treeViewerChanged(final TreeViewer oldViewer, final TreeViewer newViewer) {
    if (oldViewer != newViewer) {
        this.treeViewer = newViewer;
        if (oldViewer != null) {
            oldViewer.removeTreeListener(this);
        }
        if (newViewer != null) {
            newViewer.addTreeListener(this);
        }
    }
}

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From source file:org.eclipse.tcf.te.tcf.processes.ui.editor.ProcessMonitorEditorPage.java

License:Open Source License

@Override
protected TreeControl doCreateTreeControl() {
    TreeControl treeControl = new TreeControl(getViewerId(), this) {
        /* (non-Javadoc)
         * @see org.eclipse.tcf.te.ui.trees.AbstractTreeControl#configureTreeColumn(org.eclipse.swt.widgets.TreeColumn)
         *//*from   w w  w  .  ja va 2s. co m*/
        @Override
        protected void configureTreeColumn(TreeColumn treeColumn) {
            super.configureTreeColumn(treeColumn);

            if (treeColumn.getText() != null) {
                String text = Messages.getStringDelegated(ProcessMonitorEditorPage.this.getEditorInputNode(),
                        "ProcessMonitor_treeColum_" + treeColumn.getText().replace(' ', '_')); //$NON-NLS-1$
                if (text != null)
                    treeColumn.setText(text);
            }
        }

        /* (non-Javadoc)
         * @see org.eclipse.tcf.te.ui.trees.AbstractTreeControl#createHeaderMenu(org.eclipse.tcf.te.ui.trees.AbstractTreeControl)
         */
        @Override
        protected TreeViewerHeaderMenu createHeaderMenu(AbstractTreeControl control) {
            Assert.isNotNull(control);
            return new TreeViewerHeaderMenu(control) {
                /* (non-Javadoc)
                 * @see org.eclipse.tcf.te.ui.trees.TreeViewerHeaderMenu#configureMenuItem(org.eclipse.swt.widgets.MenuItem)
                 */
                @Override
                protected void configureMenuItem(MenuItem item) {
                    super.configureMenuItem(item);

                    if (item.getText() != null) {
                        String text = Messages.getStringDelegated(
                                ProcessMonitorEditorPage.this.getEditorInputNode(),
                                "ProcessMonitor_menuItem_" + item.getText().replace(' ', '_')); //$NON-NLS-1$
                        if (text != null)
                            item.setText(text);
                    }
                }
            };
        }

        /* (non-Javadoc)
         * @see org.eclipse.tcf.te.ui.trees.TreeControl#getAutoExpandLevel()
         */
        @Override
        protected int getAutoExpandLevel() {
            if (ProcessMonitorEditorPage.this.getEditorInputNode() instanceof IPeerNode) {
                IPeerNode peerNode = (IPeerNode) ProcessMonitorEditorPage.this.getEditorInputNode();
                IProcessMonitorUIDelegate delegate = ServiceUtils.getUIServiceDelegate(peerNode, peerNode,
                        IProcessMonitorUIDelegate.class);
                if (delegate != null) {
                    return delegate.getAutoExpandLevel();
                }
            }
            return super.getAutoExpandLevel();
        }
    };
    Assert.isNotNull(treeControl);

    if (listener == null) {
        listener = new ProcessMonitorEventListener(treeControl);
        EventManager.getInstance().addEventListener(listener, ChangeEvent.class);
    }

    if (treeListener == null && treeControl.getViewer() instanceof TreeViewer) {
        final TreeViewer treeViewer = (TreeViewer) treeControl.getViewer();

        treeListener = new TreeViewerListener();
        treeViewer.addTreeListener(treeListener);
        treeViewer.getTree().addDisposeListener(new DisposeListener() {
            @Override
            public void widgetDisposed(DisposeEvent e) {
                if (treeListener != null) {
                    treeViewer.removeTreeListener(treeListener);
                    treeListener = null;
                }
            }
        });
    }

    return treeControl;
}

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From source file:org.eclipse.tcf.te.tcf.processes.ui.navigator.runtime.ContentProvider.java

License:Open Source License

@Override
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
    // Initialize the tree listener if necessary
    if (listener == null && viewer instanceof TreeViewer) {
        final TreeViewer treeViewer = (TreeViewer) viewer;

        listener = new TreeViewerListener();
        treeViewer.addTreeListener(listener);
        treeViewer.getTree().addDisposeListener(new DisposeListener() {
            @Override/*from  www. ja v  a  2s .c  o  m*/
            public void widgetDisposed(DisposeEvent e) {
                if (listener != null) {
                    treeViewer.removeTreeListener(listener);
                    listener = null;
                }
            }
        });
    }
}

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