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/*
* Copyright (C) 2007 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.values.uimodel;
import com.android.ide.eclipse.adt.internal.editors.descriptors.TextValueDescriptor;
import com.android.ide.eclipse.adt.internal.editors.uimodel.UiAttributeNode;
import com.android.ide.eclipse.adt.internal.editors.uimodel.UiElementNode;
import com.android.ide.eclipse.adt.internal.editors.uimodel.UiTextValueNode;
import org.eclipse.jface.dialogs.IMessageProvider;
import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.widgets.Text;
import java.util.regex.Pattern;
/**
* Displays and edits a color XML element value with a custom validator.
* <p/>
* See {@link UiAttributeNode} for more information.
*/
public class UiColorValueNode extends UiTextValueNode {
/** Accepted RGBA formats are one of #RGB, #ARGB, #RRGGBB or #AARRGGBB. */
private static final Pattern RGBA_REGEXP = Pattern.compile(
"#(?:[0-9a-fA-F]{3,4}|[0-9a-fA-F]{6}|[0-9a-fA-F]{8})"); //$NON-NLS-1$
public UiColorValueNode(TextValueDescriptor attributeDescriptor, UiElementNode uiParent) {
super(attributeDescriptor, uiParent);
}
/* (non-java doc)
*
* Add a modify listener that will check colors have the proper format,
* that is one of #RGB, #ARGB, #RRGGBB or #AARRGGBB.
*/
@Override
protected void onAddValidators(final Text text) {
ModifyListener listener = new ModifyListener() {
@Override
public void modifyText(ModifyEvent e) {
String color = text.getText();
if (RGBA_REGEXP.matcher(color).matches()) {
getManagedForm().getMessageManager().removeMessage(text, text);
} else {
getManagedForm().getMessageManager().addMessage(text,
"Accepted color formats are one of #RGB, #ARGB, #RRGGBB or #AARRGGBB.",
null /* data */, IMessageProvider.ERROR, text);
}
}
};
text.addModifyListener(listener);
// Make sure the validator removes its message(s) when the widget is disposed
text.addDisposeListener(new DisposeListener() {
@Override
public void widgetDisposed(DisposeEvent e) {
getManagedForm().getMessageManager().removeMessage(text, text);
}
});
// Finally call the validator once to make sure the initial value is processed
listener.modifyText(null);
}
}
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