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/*******************************************************************************
* Copyright (c) 2001, 2007 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
* Jens Lukowski/Innoopract - initial renaming/restructuring
*
*******************************************************************************/
package org.eclipse.wst.dtd.ui.views.contentoutline;
import java.util.HashMap;
import java.util.Map;
import org.eclipse.jface.action.IContributionItem;
import org.eclipse.jface.action.IMenuListener;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.jface.util.LocalSelectionTransfer;
import org.eclipse.jface.util.SafeRunnable;
import org.eclipse.jface.util.TransferDragSourceListener;
import org.eclipse.jface.util.TransferDropTargetListener;
import org.eclipse.jface.viewers.IContentProvider;
import org.eclipse.jface.viewers.ILabelProvider;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.swt.dnd.DND;
import org.eclipse.swt.dnd.DragSourceEvent;
import org.eclipse.swt.dnd.DropTargetEvent;
import org.eclipse.swt.dnd.Transfer;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.TableItem;
import org.eclipse.swt.widgets.TreeItem;
import org.eclipse.wst.common.ui.internal.dnd.DragAndDropCommand;
import org.eclipse.wst.dtd.core.internal.document.DTDModelImpl;
import org.eclipse.wst.dtd.ui.internal.DTDUIPlugin;
import org.eclipse.wst.dtd.ui.internal.dnd.DTDDragAndDropManager;
import org.eclipse.wst.sse.ui.internal.contentoutline.PropertyChangeUpdateActionContributionItem;
import org.eclipse.wst.sse.ui.internal.util.Assert;
import org.eclipse.wst.sse.ui.views.contentoutline.ContentOutlineConfiguration;
/**
* Configuration for outline view page which shows DTD content.
*
* @see org.eclipse.wst.sse.ui.views.contentoutline.ContentOutlineConfiguration
* @since 1.0
*/
public class DTDContentOutlineConfiguration extends ContentOutlineConfiguration {
private IContentProvider fContentProvider = null;
private ILabelProvider fLabelProvider = null;
private DTDContextMenuHelper fMenuHelper;
private TransferDragSourceListener[] fTransferDragSourceListeners;
private TransferDropTargetListener[] fTransferDropTargetListeners;
private Map fViewerContributions;
private final String OUTLINE_ORDER_PREF = "outline-order"; //$NON-NLS-1$
private final String OUTLINE_SORT_PREF = "outline-sort"; //$NON-NLS-1$
/**
* Default constructor for DTDContentOutlineConfiguration.
*/
public DTDContentOutlineConfiguration() {
// Must have empty constructor to createExecutableExtension
super();
fViewerContributions = new HashMap(2);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.wst.sse.ui.views.contentoutline.ContentOutlineConfiguration#createToolbarContributions(org.eclipse.jface.viewers.TreeViewer)
*/
public IContributionItem[] createToolbarContributions(TreeViewer viewer) {
Assert.isTrue(getContentProvider(viewer) instanceof DTDTreeContentProvider, "invalid content provider on viewer"); //$NON-NLS-1$
IContributionItem[] items = super.createToolbarContributions(viewer);
SortAction sortAction = new SortAction(viewer, DTDUIPlugin.getDefault().getPreferenceStore(), OUTLINE_SORT_PREF);
OrderAction orderAction = new OrderAction(viewer, (DTDTreeContentProvider) getContentProvider(viewer), DTDUIPlugin.getDefault().getPreferenceStore(), OUTLINE_ORDER_PREF);
IContributionItem sortItem = new PropertyChangeUpdateActionContributionItem(sortAction);
IContributionItem orderItem = new PropertyChangeUpdateActionContributionItem(orderAction);
if (items == null) {
items = new IContributionItem[2];
items[0] = sortItem;
items[1] = orderItem;
}
else {
IContributionItem[] combinedItems = new IContributionItem[items.length + 2];
combinedItems[0] = sortItem;
combinedItems[1] = orderItem;
System.arraycopy(items, 0, combinedItems, 2, items.length);
items = combinedItems;
}
return items;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.wst.sse.ui.views.contentoutline.ContentOutlineConfiguration#getContentProvider(org.eclipse.jface.viewers.TreeViewer)
*/
public IContentProvider getContentProvider(TreeViewer viewer) {
if (fContentProvider == null) {
fContentProvider = new DTDTreeContentProvider();
}
// return super.getContentProvider(viewer);
return fContentProvider;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.wst.sse.ui.views.contentoutline.ContentOutlineConfiguration#getLabelProvider(org.eclipse.jface.viewers.TreeViewer)
*/
public ILabelProvider getLabelProvider(TreeViewer viewer) {
if (fLabelProvider == null) {
fLabelProvider = new DTDLabelProvider();
}
// return super.getLabelProvider(viewer);
return fLabelProvider;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.wst.sse.ui.views.contentoutline.ContentOutlineConfiguration#getMenuListener(org.eclipse.jface.viewers.TreeViewer)
*/
public IMenuListener getMenuListener(TreeViewer viewer) {
IMenuListener listener = null;
if (fMenuHelper == null && viewer.getInput() instanceof DTDModelImpl) {
fMenuHelper = new DTDContextMenuHelper((DTDModelImpl) viewer.getInput());
fMenuHelper.createMenuListenersFor(viewer);
}
if (fMenuHelper != null) {
listener = fMenuHelper.getMenuListener();
}
return listener;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.wst.sse.ui.views.contentoutline.ContentOutlineConfiguration#getPreferenceStore()
*/
protected IPreferenceStore getPreferenceStore() {
return DTDUIPlugin.getDefault().getPreferenceStore();
}
/*
* (non-Javadoc)
*
* @see org.eclipse.wst.sse.ui.views.contentoutline.ContentOutlineConfiguration#getTransferDragSourceListeners(org.eclipse.jface.viewers.TreeViewer)
*/
public TransferDragSourceListener[] getTransferDragSourceListeners(final TreeViewer treeViewer) {
if (fTransferDragSourceListeners == null) {
fTransferDragSourceListeners = new TransferDragSourceListener[]{new TransferDragSourceListener() {
public void dragFinished(DragSourceEvent event) {
LocalSelectionTransfer.getTransfer().setSelection(null);
}
public void dragSetData(DragSourceEvent event) {
}
public void dragStart(DragSourceEvent event) {
LocalSelectionTransfer.getTransfer().setSelection(treeViewer.getSelection());
}
public Transfer getTransfer() {
return LocalSelectionTransfer.getTransfer();
}
}};
}
return fTransferDragSourceListeners;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.wst.sse.ui.views.contentoutline.ContentOutlineConfiguration#getTransferDropTargetListeners(org.eclipse.jface.viewers.TreeViewer)
*/
public TransferDropTargetListener[] getTransferDropTargetListeners(final TreeViewer treeViewer) {
if (fTransferDropTargetListeners == null) {
fTransferDropTargetListeners = new TransferDropTargetListener[]{new TransferDropTargetListener() {
public void dragEnter(DropTargetEvent event) {
}
public void dragLeave(DropTargetEvent event) {
}
public void dragOperationChanged(DropTargetEvent event) {
}
public void dragOver(DropTargetEvent event) {
event.feedback = DND.FEEDBACK_SELECT;
float feedbackFloat = getHeightInItem(event);
if (feedbackFloat > 0.75) {
event.feedback = DND.FEEDBACK_INSERT_AFTER;
}
else if (feedbackFloat < 0.25) {
event.feedback = DND.FEEDBACK_INSERT_BEFORE;
}
event.feedback |= DND.FEEDBACK_EXPAND | DND.FEEDBACK_SCROLL;
}
public void drop(DropTargetEvent event) {
if (event.operations != DND.DROP_NONE && LocalSelectionTransfer.getTransfer().getSelection() instanceof IStructuredSelection) {
IStructuredSelection selection = (IStructuredSelection) LocalSelectionTransfer.getTransfer().getSelection();
if (selection != null && !selection.isEmpty() && event.item != null && event.item.getData() != null) {
/*
* the command uses these numbers instead of the
* feedback constants (even though it converts in
* the other direction as well)
*/
float feedbackFloat = getHeightInItem(event);
final DragAndDropCommand command = new DTDDragAndDropManager().createCommand(event.item.getData(), feedbackFloat, event.operations, event.detail, selection.toList());
if (command != null && command.canExecute()) {
SafeRunnable.run(new SafeRunnable() {
public void run() throws Exception {
command.execute();
}
});
}
}
}
}
public void dropAccept(DropTargetEvent event) {
}
private float getHeightInItem(DropTargetEvent event) {
if(event.item == null) return .5f;
if (event.item instanceof TreeItem) {
TreeItem treeItem = (TreeItem) event.item;
Control control = treeItem.getParent();
Point point = control.toControl(new Point(event.x, event.y));
Rectangle bounds = treeItem.getBounds();
return (float) (point.y - bounds.y) / (float) bounds.height;
}
else if (event.item instanceof TableItem) {
TableItem tableItem = (TableItem) event.item;
Control control = tableItem.getParent();
Point point = control.toControl(new Point(event.x, event.y));
Rectangle bounds = tableItem.getBounds(0);
return (float) (point.y - bounds.y) / (float) bounds.height;
}
else {
return 0.0F;
}
}
public Transfer getTransfer() {
return LocalSelectionTransfer.getTransfer();
}
public boolean isEnabled(DropTargetEvent event) {
return getTransfer().isSupportedType(event.currentDataType);
}
}};
}
return fTransferDropTargetListeners;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.wst.sse.ui.views.contentoutline.ContentOutlineConfiguration#unconfigure(org.eclipse.jface.viewers.TreeViewer)
*/
public void unconfigure(TreeViewer viewer) {
super.unconfigure(viewer);
fViewerContributions.remove(viewer);
if (fMenuHelper != null) {
fMenuHelper.removeMenuListenersFor(viewer);
fMenuHelper = null;
}
}
}
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