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/*******************************************************************************
* Copyright (c) 2004 - 2006 University Of British Columbia 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:
* University Of British Columbia - initial API and implementation
*******************************************************************************/
package org.eclipse.mylyn.internal.tasks.ui.views;
import java.lang.reflect.Field;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.jobs.Job;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.action.ToolBarManager;
import org.eclipse.mylyn.internal.tasks.ui.TasksUiImages;
import org.eclipse.mylyn.monitor.core.StatusHandler;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.KeyAdapter;
import org.eclipse.swt.events.KeyEvent;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Label;
import org.eclipse.ui.dialogs.FilteredTree;
import org.eclipse.ui.dialogs.PatternFilter;
import org.eclipse.ui.internal.WorkbenchMessages;
import org.osgi.framework.Bundle;
/**
* @author Mik Kersten
*/
public abstract class AbstractFilteredTree extends FilteredTree {
private static final int filterWidth = 69;
public static final String LABEL_FIND = " Find:";
private Job refreshJob;
private AdaptiveRefreshPolicy refreshPolicy;
private Composite progressComposite;
private boolean showProgress = false;
private boolean eclipse_3_3_workbench = false;
/**
* HACK: using reflection to gain access
*/
public AbstractFilteredTree(Composite parent, int treeStyle, PatternFilter filter) {
super(parent, treeStyle, filter);
Field refreshField;
try {
refreshField = FilteredTree.class.getDeclaredField("refreshJob");
refreshField.setAccessible(true);
refreshJob = (Job) refreshField.get(this);
refreshPolicy = new AdaptiveRefreshPolicy(refreshJob, super.getFilterControl());
} catch (Exception e) {
StatusHandler.fail(e, "Could not get refresh job", false);
}
setInitialText("");
Bundle bundle = Platform.getBundle("org.eclipse.ui.workbench");
if (bundle.getLocation().contains("_3.3.")) {
eclipse_3_3_workbench = true;
}
}
@Override
protected void createControl(Composite parent, int treeStyle) {
super.createControl(parent, treeStyle);
// Override superclass layout settings...
GridLayout layout = (GridLayout) getLayout();
layout.verticalSpacing = 0;
layout.horizontalSpacing = 0;
}
@Override
protected Control createTreeControl(Composite parent, int style) {
progressComposite = createProgressComposite(parent);
progressComposite.setVisible(false);
((GridData) progressComposite.getLayoutData()).exclude = true;
return super.createTreeControl(parent, style);
}
@Override
protected Composite createFilterControls(Composite parent) {
GridLayout gridLayout = new GridLayout(4, false);
gridLayout.marginWidth = 0;
gridLayout.marginHeight = 2;
gridLayout.verticalSpacing = 0;
parent.setLayout(gridLayout);
Label label = new Label(parent, SWT.NONE);
label.setText(LABEL_FIND);
// from super
createFilterText(parent);
createClearText(parent);
if (filterToolBar != null) {
filterToolBar.update(false);
// initially there is no text to clear
filterToolBar.getControl().setVisible(false);
}
GridData gd = new GridData(SWT.FILL, SWT.CENTER, true, false);
gd.minimumWidth = filterWidth;
filterText.setLayoutData(gd);
filterText.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.character == SWT.ESC) {
setFilterText("");
}
}
});
Composite superComposite = new Composite(parent, SWT.NONE);
GridLayout superLayout = new GridLayout(4, false);
GridData superLayoutData = new GridData(SWT.LEFT, SWT.CENTER, true, false);
superComposite.setLayout(superLayout);
superComposite.setLayoutData(superLayoutData);
Composite workingSetComposite = createActiveWorkingSetComposite(superComposite);
workingSetComposite.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false));
Composite activeTaskComposite = createActiveTaskComposite(superComposite);
activeTaskComposite.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, true, false));
parent.layout();
return parent;
}
private void createClearText(Composite parent) {
// only create the button if the text widget doesn't support one
// natively
if ((filterText.getStyle() & SWT.CANCEL) == 0) {
filterToolBar = new ToolBarManager(SWT.FLAT | SWT.HORIZONTAL);
filterToolBar.createControl(parent);
IAction clearTextAction = new Action("", IAction.AS_PUSH_BUTTON) {//$NON-NLS-1$
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.action.Action#run()
*/
public void run() {
clearText();
}
};
clearTextAction.setToolTipText(WorkbenchMessages.FilteredTree_ClearToolTip);
clearTextAction.setImageDescriptor(TasksUiImages.FIND_CLEAR);
clearTextAction.setDisabledImageDescriptor(TasksUiImages.FIND_CLEAR_DISABLED);
filterToolBar.add(clearTextAction);
}
}
protected abstract Composite createProgressComposite(Composite container);
protected abstract Composite createActiveWorkingSetComposite(Composite container);
protected abstract Composite createActiveTaskComposite(Composite container);
@Override
protected void textChanged() {
if (refreshPolicy != null) {
refreshPolicy.textChanged(filterText.getText());
}
if (eclipse_3_3_workbench) {
// bug 165353 work-around for premature return at
// FilteredTree.java:374
updateToolbar(true);
}
}
protected Job getRefreshJob() {
return refreshJob;
}
public AdaptiveRefreshPolicy getRefreshPolicy() {
return refreshPolicy;
}
public boolean isShowProgress() {
return showProgress;
}
public void setShowProgress(boolean showProgress) {
this.showProgress = showProgress;
progressComposite.setVisible(showProgress);
((GridData) progressComposite.getLayoutData()).exclude = !showProgress;
getParent().getParent().layout(true, true);
}
}
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