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/*******************************************************************************
* Copyright (c) 2008, 2012 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.core.runtime.IStatus;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerFilter;
import org.eclipse.jpt.common.ui.internal.plugin.JptCommonUiPlugin;
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.ModifiablePropertyValueModel;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.FileDialog;
import org.eclipse.ui.dialogs.ISelectionStatusValidator;
/**
* This chooser allows the user to choose a file when browsing.
* <p>
* Here the layout of this pane:
* <pre>
* -----------------------------------------------------------------------
* | ---------------------------------------------------- ------------- |
* | | I | | Browse... | |
* | ---------------------------------------------------- ------------- |
* -----------------------------------------------------------------------</pre>
*
* @version 2.0
* @since 2.0
*/
public abstract class FileChooserPane<T extends Model> extends ChooserPane<T>
{
private ModifiablePropertyValueModel<String> textHolder;
/**
* Creates a new <code>FileChooserPane</code>.
*
* @param parentPane The parent pane of this one
* @param parent The parent container
*/
public FileChooserPane(Pane<? extends T> parentPane,
Composite parent) {
super(parentPane, parent);
}
/**
* Creates a new <code>FileChooserPane</code>.
*
* @param parentPane The parent container of this one
* @param subjectHolder The holder of this pane's subject
* @param parent The parent container
*/
public FileChooserPane(Pane<?> parentPane,
PropertyValueModel<? extends T> subjectHolder,
Composite parent) {
super(parentPane, subjectHolder, parent);
}
@Override
protected final Runnable buildBrowseAction() {
return new Runnable() {
public void run() {
promptFile();
}
};
}
/**
* Creates the <code>ViewerFilter</code> that will filter the content of the
* dialog and only displays what is valid.
*
* @return A new <code>ViewerFilter</code>
*/
protected ViewerFilter buildFilter() {
return new ViewerFilter() {
@Override
public boolean select(Viewer viewer,
Object parentElement,
Object element) {
return true;
}
};
}
@Override
protected Control addMainControl(Composite container) {
return this.addText(container, this.textHolder, getHelpId());
}
/**
* Creates the value holder of the subject's property.
*
* @return The holder of the class name
*/
protected abstract ModifiablePropertyValueModel<String> buildTextHolder();
/**
* Creates the validator that will show a status message based on what is
* selected in the selection dialog.
*
* @return A new <code>ISelectionStatusValidator</code>
*/
protected ISelectionStatusValidator buildValidator() {
return new ISelectionStatusValidator() {
public IStatus validate(Object[] selection) {
int status = (selection.length == 1) ? IStatus.OK : IStatus.ERROR;
return JptCommonUiPlugin.instance().buildStatus(status);
}
};
}
/**
* Returns the selection dialog's title.
*
* @return A non-<code>null</code> string
*/
protected abstract String getDialogTitle();
/**
* Retrieves the project path that will be used by the selection dialog.
*
* @return The project path used to display its content in a selection dialog
*/
protected abstract String getProjectPath();
protected ModifiablePropertyValueModel<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 file and set it.
*/
protected void promptFile() {
String projectPath= this.getProjectPath();
FileDialog dialog = new FileDialog(getShell());
dialog.setText(this.getDialogTitle());
dialog.setFilterPath(projectPath);
String filePath = dialog.open();
if (filePath != null) {
FileChooserPane.this.textHolder.setValue(filePath);
}
}
}
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