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/*******************************************************************************
* Copyright (c) 2016 Red Hat Inc. and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Red Hat Inc. - initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.internal.autotools.ui.editors;
import org.eclipse.cdt.autotools.ui.editors.AutoconfEditor;
import org.eclipse.cdt.autotools.ui.editors.outline.AutoconfContentProvider;
import org.eclipse.cdt.autotools.ui.editors.outline.AutoconfLabelProvider;
import org.eclipse.cdt.autotools.ui.editors.parser.AutoconfElement;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.dialogs.PopupDialog;
import org.eclipse.jface.layout.GridDataFactory;
import org.eclipse.jface.viewers.AbstractTreeViewer;
import org.eclipse.jface.viewers.ILabelProvider;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.KeyAdapter;
import org.eclipse.swt.events.KeyEvent;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.FontMetrics;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
import org.eclipse.swt.widgets.Tree;
import org.eclipse.ui.editors.text.TextEditor;
import org.eclipse.ui.views.contentoutline.IContentOutlinePage;
public class QuickOutlineDialog extends PopupDialog {
TreeViewer treeViewer;
private Text filterText;
private TextEditor editor;
private ContainsFilter treeViewerFilter;
public QuickOutlineDialog(Shell parent, int shellStyle, AutoconfEditor editor) {
super(parent, shellStyle, true, true, true, true, true, null, null);
this.editor = editor;
create();
}
public void setVisible(boolean visible) {
if (visible) {
open();
filterText.setFocus();
} else {
saveDialogBounds(getShell());
getShell().setVisible(false);
}
}
public void dispose() {
close();
}
@Override
protected Control createDialogArea(Composite parent) {
createUIWidgetTreeViewer(parent);
createUIListenersTreeViewer();
return treeViewer.getControl();
}
@Override
protected Control createTitleControl(Composite parent) {
filterText = new Text(parent, SWT.NONE);
GC gc = new GC(parent);
gc.setFont(parent.getFont());
FontMetrics fontMetrics = gc.getFontMetrics();
gc.dispose();
GridDataFactory.fillDefaults().align(SWT.FILL, SWT.CENTER).grab(true, false)
.hint(SWT.DEFAULT, Dialog.convertHeightInCharsToPixels(fontMetrics, 1)).applyTo(filterText);
filterText.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.keyCode == 0x0D) { // Enter pressed
gotoSelectedElement();
} else if (e.keyCode == SWT.ARROW_DOWN) {
treeViewer.getTree().setFocus();
} else if (e.keyCode == SWT.ARROW_UP) {
treeViewer.getTree().setFocus();
} else if (e.character == 0x1B) { // Escape pressed
dispose();
}
}
});
filterText.addModifyListener(e -> {
String filterTextInput = ((Text) e.widget).getText().toLowerCase();
treeViewerFilter.setLookFor(filterTextInput);
stringMatcherUpdated();
});
return filterText;
}
private void stringMatcherUpdated() {
treeViewer.getControl().setRedraw(false);
treeViewer.refresh();
treeViewer.expandAll();
if (treeViewer.getTree().getTopItem() != null && treeViewer.getTree().getTopItem().getItemCount() > 0) {
treeViewer.getTree().select(treeViewer.getTree().getTopItem().getItem(0));
} else if (treeViewer.getTree().getItemCount() > 0) {
treeViewer.getTree().select(treeViewer.getTree().getItem(0));
}
treeViewer.getControl().setRedraw(true);
}
private void createUIWidgetTreeViewer(Composite parent) {
final int style = SWT.H_SCROLL | SWT.V_SCROLL;
final Tree widget = new Tree(parent, style);
final GridData data = new GridData(GridData.FILL_BOTH);
data.heightHint = widget.getItemHeight() * 12;
widget.setLayoutData(data);
treeViewer = new TreeViewer(widget);
treeViewerFilter = new ContainsFilter();
treeViewer.addFilter(treeViewerFilter);
ITreeContentProvider fOutlineContentProvider = new AutoconfContentProvider(editor);
ILabelProvider fTreeLabelProvider = new AutoconfLabelProvider();
treeViewer.setContentProvider(fOutlineContentProvider);
treeViewer.setLabelProvider(fTreeLabelProvider);
treeViewer.setAutoExpandLevel(AbstractTreeViewer.ALL_LEVELS);
treeViewer.setUseHashlookup(true);
treeViewer.setInput(editor.getAdapter(IContentOutlinePage.class));
}
private void createUIListenersTreeViewer() {
final Tree tree = treeViewer.getTree();
tree.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetDefaultSelected(SelectionEvent e) {
gotoSelectedElement();
}
});
}
private void gotoSelectedElement() {
if (editor instanceof AutoconfEditor) {
final AutoconfElement curElement = (AutoconfElement) getSelectedElement();
if (curElement == null) {
return;
}
dispose();
editor.setHighlightRange(curElement.getStartOffset(), curElement.getLength(), true);
}
}
private Object getSelectedElement() {
if (treeViewer == null) {
return null;
}
return ((IStructuredSelection) treeViewer.getSelection()).getFirstElement();
}
}
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