/*******************************************************************************
* Copyright 2015 Software Evolution and Architecture Lab, University of Zurich
*
* Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
*
* 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 eu.cloudwave.wp5.feedback.eclipse.base.ui.properties;
import java.util.List;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.ProjectScope;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.preferences.IEclipsePreferences;
import org.eclipse.core.runtime.preferences.IScopeContext;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Group;
import org.eclipse.ui.dialogs.PropertyPage;
import org.osgi.service.prefs.BackingStoreException;
import com.google.common.collect.Lists;
import eu.cloudwave.wp5.feedback.eclipse.base.core.BaseIds;
import eu.cloudwave.wp5.feedback.eclipse.base.ui.factories.ControlFactory;
import eu.cloudwave.wp5.feedback.eclipse.base.ui.factories.ControlFactoryImpl;
import eu.cloudwave.wp5.feedback.eclipse.base.ui.factories.LayoutFactory;
import eu.cloudwave.wp5.feedback.eclipse.base.ui.factories.LayoutFactoryImpl;
/**
* Basic functionality/layout for property pages. While preferences/preferences pages are used on workspace level,
* properties and property pages are used on project level.
*/
public abstract class AbstractFeedbackPropertyPage extends PropertyPage {
private static final int MAIN_SPACING = 20;
private static final int GROUP_MARGIN = 5;
private static final int GROUP_SPACING = 10;
private static final int NUM_OF_COLUMNS = 2;
private LayoutFactory layoutFactory;
private ControlFactory controlFactory;
private List<PropertyPageField> fields;
private Composite main;
public AbstractFeedbackPropertyPage() {
this.layoutFactory = new LayoutFactoryImpl();
this.controlFactory = new ControlFactoryImpl();
this.fields = Lists.newArrayList();
}
/**
* {@inheritDoc}
*/
@Override
protected final Control createContents(final Composite parent) {
getShell().setBackgroundMode(SWT.INHERIT_FORCE); // background color is inherited from parent control
// create controls
createMain(parent);
createDescription();
// add fields
addGroups();
// load values
loadValues();
return this.main;
}
private final void createMain(final Composite parent) {
this.main = new Composite(parent, SWT.NULL);
final RowLayout mainLayout = new RowLayout();
mainLayout.spacing = MAIN_SPACING;
mainLayout.type = SWT.VERTICAL;
this.main.setLayout(mainLayout);
}
private final void createDescription() {
controlFactory.createLabel(this.main, description());
}
/**
* The description that is displayed on top of the property page.
*
* @return the description of the property page
*/
protected abstract String description();
/**
* Adds the required fields to the property page.
*/
protected abstract void addGroups();
protected final void addGroup(final String title, final PropertyPageField... fields) {
final Group group = new Group(main, SWT.SHADOW_ETCHED_IN);
group.setText(title);
final GridLayout groupLayout = layoutFactory.createGridLayout(GROUP_MARGIN, GROUP_SPACING);
groupLayout.numColumns = NUM_OF_COLUMNS;
group.setLayout(groupLayout);
for (final PropertyPageField field : fields) {
this.fields.add(field);
field.display(group);
}
}
private final void loadValues() {
final IEclipsePreferences projectPreferences = getProjectPreferences();
for (final PropertyPageField field : fields) {
field.loadValue(projectPreferences);
}
}
/**
* {@inheritDoc}
*/
@Override
public final boolean performOk() {
final IEclipsePreferences projectPreferences = getProjectPreferences();
for (final PropertyPageField field : fields) {
field.storeValue(projectPreferences);
}
try {
projectPreferences.flush();
}
catch (final BackingStoreException e) {
// settings could not be saved.
e.printStackTrace();
}
return super.performOk();
}
/**
* {@inheritDoc}
*/
@Override
protected final void performApply() {
super.performApply();
}
private final IEclipsePreferences getProjectPreferences() {
final IAdaptable element = getElement();
IProject project = null;
if (element instanceof IJavaProject) {
project = ((IJavaProject) element).getProject();
}
else if (element instanceof IProject) {
project = (IProject) element;
}
if (project != null) {
final IScopeContext context = new ProjectScope(project);
return context.getNode(BaseIds.ID);
}
return null;
}
}