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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.lint;
import static com.android.SdkConstants.UNIT_PX;
import static com.android.SdkConstants.VALUE_N_DP;
import com.android.ide.eclipse.adt.AdtPlugin;
import org.eclipse.core.resources.IMarker;
import org.eclipse.jface.dialogs.IInputValidator;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.window.Window;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.wst.sse.core.internal.provisional.IStructuredModel;
import org.w3c.dom.Attr;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
@SuppressWarnings("restriction") // DOM model
final class ConvertToDpFix extends DocumentFix implements IInputValidator {
private ConvertToDpFix(String id, IMarker marker) {
super(id, marker);
}
@Override
public boolean needsFocus() {
return false;
}
@Override
public boolean isCancelable() {
return true;
}
@Override
protected void apply(IDocument document, IStructuredModel model, Node node, int start,
int end) {
Shell shell = AdtPlugin.getShell();
InputDensityDialog densityDialog = new InputDensityDialog(shell);
if (densityDialog.open() == Window.OK) {
int dpi = densityDialog.getDensity();
Element element = (Element) node;
Pattern pattern = Pattern.compile("(\\d+)px"); //$NON-NLS-1$
NamedNodeMap attributes = element.getAttributes();
for (int i = 0, n = attributes.getLength(); i < n; i++) {
Attr attribute = (Attr) attributes.item(i);
String value = attribute.getValue();
if (value.endsWith(UNIT_PX)) {
Matcher matcher = pattern.matcher(value);
if (matcher.matches()) {
String numberString = matcher.group(1);
try {
int px = Integer.parseInt(numberString);
int dp = px * 160 / dpi;
String newValue = String.format(VALUE_N_DP, dp);
attribute.setNodeValue(newValue);
} catch (NumberFormatException nufe) {
AdtPlugin.log(nufe, null);
}
}
}
}
}
}
@Override
public String getDisplayString() {
return "Convert to \"dp\"...";
}
@Override
public Image getImage() {
return AdtPlugin.getAndroidLogo();
}
// ---- Implements IInputValidator ----
@Override
public String isValid(String input) {
if (input == null || input.length() == 0)
return " "; //$NON-NLS-1$
try {
int i = Integer.parseInt(input);
if (i <= 0 || i > 1000) {
return "Invalid range";
}
} catch (NumberFormatException x) {
return "Enter a valid number";
}
return null;
}
}
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