Author: rob.stryker(a)jboss.com Date: 2007-11-07 21:07:03 -0500 (Wed, 07 Nov 2007) New Revision: 4767 Added: trunk/as/plugins/org.jboss.ide.eclipse.as.ui/jbossui/org/jboss/ide/eclipse/as/ui/views/server/providers/jmx/TreeEditorSelectionListener.java Log: Operations enhanced ;) Added: trunk/as/plugins/org.jboss.ide.eclipse.as.ui/jbossui/org/jboss/ide/eclipse/as/ui/views/server/providers/jmx/TreeEditorSelectionListener.java =================================================================== --- trunk/as/plugins/org.jboss.ide.eclipse.as.ui/jbossui/org/jboss/ide/eclipse/as/ui/views/server/providers/jmx/TreeEditorSelectionListener.java (rev 0) +++ trunk/as/plugins/org.jboss.ide.eclipse.as.ui/jbossui/org/jboss/ide/eclipse/as/ui/views/server/providers/jmx/TreeEditorSelectionListener.java 2007-11-08 02:07:03 UTC (rev 4767) @@ -0,0 +1,118 @@ +package org.jboss.ide.eclipse.as.ui.views.server.providers.jmx; + +import org.eclipse.swt.SWT; +import org.eclipse.swt.custom.TreeEditor; +import org.eclipse.swt.graphics.Color; +import org.eclipse.swt.graphics.GC; +import org.eclipse.swt.graphics.Point; +import org.eclipse.swt.graphics.Rectangle; +import org.eclipse.swt.widgets.Composite; +import org.eclipse.swt.widgets.Display; +import org.eclipse.swt.widgets.Event; +import org.eclipse.swt.widgets.Listener; +import org.eclipse.swt.widgets.Text; +import org.eclipse.swt.widgets.Tree; +import org.eclipse.swt.widgets.TreeItem; + +public class TreeEditorSelectionListener implements Listener { + + public static interface SelectionCallbackHandler { + public boolean canModify(TreeItem item); + public void cannotModify(TreeItem item); + public void handleChange(TreeItem item, Text text); + } + + private Color black; + private TreeEditor editor; + private Tree tree; + private int column; + private SelectionCallbackHandler callback; + + public TreeEditorSelectionListener(Tree tree, int column, SelectionCallbackHandler handler) { + black = Display.getCurrent().getSystemColor(SWT.COLOR_BLACK); + editor = new TreeEditor(tree); + this.tree = tree; + this.column = column; + this.callback = handler; + } + + public void handleEvent(Event event) { + if( callback == null ) return; + + TreeItem[] selectedItems = tree.getSelection(); + if (selectedItems.length != 1) + return; + final TreeItem item = selectedItems[0]; + + if( !callback.canModify(item)) { + callback.cannotModify(item); + return; + } + + boolean isCarbon = SWT.getPlatform().equals("carbon"); + final Composite composite = new Composite(tree, SWT.NONE); + if (!isCarbon) + composite.setBackground(black); + final Text text = new Text(composite, SWT.NONE); + final int inset = isCarbon ? 0 : 1; + composite.addListener(SWT.Resize, new Listener() { + public void handleEvent(Event e) { + Rectangle rect = composite.getClientArea(); + text.setBounds(rect.x + inset, rect.y + inset, rect.width + - inset * 2, rect.height - inset * 2); + } + }); + Listener textListener = new Listener() { + public void handleEvent(final Event e) { + switch (e.type) { + case SWT.FocusOut: + composite.dispose(); + break; + case SWT.Verify: + String newText = text.getText(); + String leftText = newText.substring(0, e.start); + String rightText = newText.substring(e.end, newText + .length()); + GC gc = new GC(text); + Point size = gc.textExtent(leftText + e.text + + rightText); + gc.dispose(); + size = text.computeSize(size.x, SWT.DEFAULT); + editor.horizontalAlignment = SWT.LEFT; + Rectangle itemRect = item.getBounds(), + rect = tree.getClientArea(); + editor.minimumWidth = Math.max(size.x, itemRect.width) + + inset * 2; + int left = itemRect.x, + right = rect.x + rect.width; + editor.minimumWidth = Math.min(editor.minimumWidth, + right - left); + editor.minimumHeight = size.y + inset * 2; + editor.setColumn(column); + editor.layout(); + break; + case SWT.Traverse: + switch (e.detail) { + case SWT.TRAVERSE_RETURN: + try { + callback.handleChange(item, text); + } catch( Exception except ) {} + // FALL THROUGH + case SWT.TRAVERSE_ESCAPE: + composite.dispose(); + e.doit = false; + } + break; + } + } + }; + text.addListener(SWT.FocusOut, textListener); + text.addListener(SWT.Traverse, textListener); + text.addListener(SWT.Verify, textListener); + editor.setEditor(composite, item); + text.setText(item.getText(column)); + text.selectAll(); + text.setFocus(); + + } +}