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/*******************************************************************************
* Copyright (c) 2008 Oracle. 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:
* Oracle - initial API and implementation
******************************************************************************/
package org.eclipse.jpt.ui.internal.widgets;
import org.eclipse.jpt.ui.internal.JptUiMessages;
import org.eclipse.jpt.utility.model.Model;
import org.eclipse.jpt.utility.model.value.PropertyValueModel;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
/**
* A chooser is simply a pane with three widgets, the label on the left, a main
* widget, usually a text field, and a right widget which is usually a browse
* button.
*
* @see ClassChooserPane
* @see PackageChooserPane
*
* @version 2.0
* @since 2.0
*/
public abstract class ChooserPane<T extends Model> extends Pane<T>
{
/**
* The control shown after the label (left control).
*/
private Control mainControl;
/**
* The control shown after the main control.
*/
private Control rightControl;
/**
* Creates a new <code>ChooserPane</code>.
*
* @param parentPane The parent pane of this one
* @param parent The parent container
*/
public ChooserPane(Pane<? extends T> parentPane,
Composite parent) {
super(parentPane, parent);
}
/**
* Creates a new <code>ChooserPane</code>.
*
* @param parentPane The parent container of this one
* @param subjectHolder The holder of this pane's subject
* @param parent The parent container
*/
public ChooserPane(Pane<?> parentPane,
PropertyValueModel<? extends T> subjectHolder,
Composite parent) {
super(parentPane, subjectHolder, parent);
}
/**
* Returns the text of the browse button. This method is called by
* {@link #buildRightControl(Composite)}.
*
* @return "Browse..."
*/
protected String getBrowseButtonText() {
return JptUiMessages.ChooserPane_browseButton;
}
/**
* Creates the action responsible to perform the action when the Browse is
* clicked.
*
* @return A new <code>Runnable</code> performing the actual action of the
* button
*/
protected abstract Runnable buildBrowseAction();
/**
* Creates the left control. By default a label is created and its text is
* retrieved by {@link #getLabelText()}.
*
* @param container The parent container
* @return The newly created left control
*/
protected Control addLeftControl(Composite container) {
return addLabel(container, getLabelText());
}
/**
* Creates the main control of this pane.
*
* @param container The parent container
* @return The newly created main control
*/
protected abstract Control addMainControl(Composite container);
/**
* Creates the right control. By default a browse button is created and its
* action is performed by {@link #buildBrowseAction()} and its text is
* retrieved by {@link #getBrowseButtonText()}.
*
* @param container The parent container
* @return The newly created right control
*/
protected Control addRightControl(Composite container) {
return addButton(
container,
getBrowseButtonText(),
buildBrowseAction()
);
}
/*
* (non-Javadoc)
*/
@Override
public void enableWidgets(boolean enabled) {
super.enableWidgets(enabled);
if (!mainControl.isDisposed()) {
mainControl.setEnabled(enabled);
}
if (!rightControl.isDisposed()) {
rightControl.setEnabled(enabled);
}
}
/**
* Returns the help topic ID for the controls of this pane.
*
* @return <code>null</code> is returned otherwise the subclass can return an ID
*/
protected String getHelpId() {
return null;
}
/*
* (non-Javadoc)
*/
@Override
protected void initializeLayout(Composite container) {
mainControl = addMainControl(container);
rightControl = addRightControl(container);
addLabeledComposite(
container,
addLeftControl(container),
mainControl,
rightControl,
getHelpId()
);
}
/**
* The text of the label. This method is called by
* {@link #buildLeftControl(Composite)}.
*
* @return The localized text of the left control (which is a label by
* default)
*/
protected abstract String getLabelText();
}
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