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/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Eclipse Public License, Version 1.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.eclipse.org/org/documents/epl-v10.php
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.ide.eclipse.adt.internal.editors;
import static com.android.SdkConstants.PREFIX_RESOURCE_REF;
import static com.android.SdkConstants.PREFIX_THEME_REF;
import org.eclipse.swt.graphics.Point;
import org.eclipse.wst.xml.core.internal.regions.DOMRegionContext;
import org.eclipse.wst.xml.ui.internal.doubleclick.XMLDoubleClickStrategy;
/**
* Custom version of {@link XMLDoubleClickStrategy} which is smarter about
* selecting portions of resource references, etc.
*/
@SuppressWarnings("restriction") // XML API
public class AndroidDoubleClickStrategy extends XMLDoubleClickStrategy {
/**
* Creates a new {@linkplain AndroidDoubleClickStrategy}
*/
public AndroidDoubleClickStrategy() {
}
@Override
protected void processElementDoubleClicked() {
// Special case: if you click on the local name portion of an attribute pair,
// select only the local name. For example, if you click anywhere in the "text" region
// of "android:text", select just the "text" portion.
if (fTextRegion.getType() == DOMRegionContext.XML_TAG_ATTRIBUTE_NAME) {
String regionText = fStructuredDocumentRegion.getText(fTextRegion);
int cursor = fCaretPosition - fStructuredDocumentRegion.getStartOffset(fTextRegion);
int ns = regionText.indexOf(':');
if (cursor > ns) {
int start = ns + 1;
fTextViewer.setSelectedRange(fStructuredDocumentRegion.getStartOffset(fTextRegion)
+ start, fTextRegion.getTextLength() - start);
return;
}
}
super.processElementDoubleClicked();
}
@Override
protected Point getWord(String string, int cursor) {
if (string == null) {
return null;
}
// Default implementation will strip off the surrounding quotes etc:
Point position = super.getWord(string, cursor);
assert cursor >= position.x && cursor <= position.y;
// Special case: when you click on a resource identifier name, only select the
// name portion
if (string.startsWith(PREFIX_RESOURCE_REF, position.x) ||
string.startsWith(PREFIX_THEME_REF, position.x)) {
int nameStart = string.indexOf('/', position.x + 1);
if (nameStart != -1 && nameStart < cursor) {
position.x = nameStart + 1;
return position;
}
}
// Special case: when you have a dotted name, such as com.android.tools.MyClass,
// and you click on the last part, select only that part
int lastDot = string.lastIndexOf('.', cursor);
if (lastDot >= position.x && lastDot < position.y - 1) {
int next = string.indexOf('.', cursor);
if (next == -1 || next > position.y) {
position.x = lastDot + 1;
}
}
return position;
}
}
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