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/*******************************************************************************
* Copyright (c) 2008, 20010 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.common.ui.internal.widgets;
import org.eclipse.jpt.common.utility.model.Model;
import org.eclipse.jpt.common.utility.model.value.PropertyValueModel;
import org.eclipse.jpt.common.utility.model.value.WritablePropertyValueModel;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.DirectoryDialog;
/**
* This chooser allows the user to choose a folder when browsing.
* <p>
* Here the layout of this pane:
* <pre>
* -----------------------------------------------------------------------------
* | ---------------------------------------------------- ------------- |
* | Label: | I | | Browse... | |
* | ---------------------------------------------------- ------------- |
* -----------------------------------------------------------------------------</pre>
*
* @version 3.0
* @since 2.0
*/
public abstract class FolderChooserPane<T extends Model> extends ChooserPane<T>
{
private WritablePropertyValueModel<String> textHolder;
/**
* Creates a new <code>FolderChooserPane</code>.
*
* @param parentPane The parent pane of this one
* @param parent The parent container
*/
public FolderChooserPane(Pane<? extends T> parentPane,
Composite parent) {
super(parentPane, parent);
}
/**
* Creates a new <code>FolderChooserPane</code>.
*
* @param parentPane The parent container of this one
* @param subjectHolder The holder of this pane's subject
* @param parent The parent container
*/
public FolderChooserPane(Pane<?> parentPane,
PropertyValueModel<? extends T> subjectHolder,
Composite parent) {
super(parentPane, subjectHolder, parent);
}
@Override
protected final Runnable buildBrowseAction() {
return new Runnable() {
public void run() {
promptFolder();
}
};
}
@Override
protected Control addMainControl(Composite container) {
return this.addText(container, this.textHolder);
}
/**
* Creates the value holder of the subject's property.
*
* @return The holder of the class name
*/
protected abstract WritablePropertyValueModel<String> buildTextHolder();
/**
* Returns the message to be shown in the selection dialog.
*
* @return A non-<code>null</code> string shown above the text field of the
* selection dialog
*/
protected abstract String getDialogMessage();
/**
* Returns the selection dialog's title.
*
* @return A non-<code>null</code> string
*/
protected abstract String getDialogTitle();
/**
* Returns the path that the dialog will use to filter the directories it
* shows to the argument, which may be null. If the string is null, then the
* operating system's default filter path will be used.
* <p>
* Note that the path string is platform dependent. For convenience, either
* '/' or '\' can be used as a path separator.
* </p>
*
* @return The filter path
*/
protected String filterPath() {
return null;
}
protected WritablePropertyValueModel<String> getTextHolder() {
return this.textHolder;
}
@Override
protected void initialize() {
super.initialize();
this.textHolder = this.buildTextHolder();
}
/**
* The browse button was clicked, its action invokes this action which should
* prompt the user to select a folder and set it.
*/
protected void promptFolder() {
DirectoryDialog dialog = new DirectoryDialog(getShell());
dialog.setMessage(this.getDialogMessage());
dialog.setText(this.getDialogTitle());
dialog.setFilterPath(this.filterPath());
String directory = dialog.open();
if (directory != null) {
this.textHolder.setValue(directory);
}
}
}
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