/* ********************************************************************** **
** Copyright notice **
** **
** (c) 2005-2006 RSSOwl Development Team **
** http://www.rssowl.org/ **
** **
** 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.rssowl.org/legal/epl-v10.html **
** **
** A copy is found in the file epl-v10.html and important notices to the **
** license from the team is found in the textfile LICENSE.txt distributed **
** in this package. **
** **
** This copyright notice MUST APPEAR in all copies of the file! **
** **
** Contributors: **
** RSSOwl Development Team - initial API and implementation **
** **
** ********************************************************************** */
package org.rssowl.ui.internal.dialogs.cleanup;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.jface.operation.IRunnableWithProgress;
import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.jface.resource.LocalResourceManager;
import org.eclipse.jface.resource.ResourceManager;
import org.eclipse.jface.viewers.CheckboxTreeViewer;
import org.eclipse.jface.viewers.DoubleClickEvent;
import org.eclipse.jface.viewers.IColorProvider;
import org.eclipse.jface.viewers.IDoubleClickListener;
import org.eclipse.jface.viewers.IFontProvider;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.ITreeViewerListener;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.TreeExpansionEvent;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.wizard.WizardPage;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.graphics.Region;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Scrollable;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.Tree;
import org.eclipse.swt.widgets.TreeItem;
import org.rssowl.core.persist.IBookMark;
import org.rssowl.ui.internal.Activator;
import org.rssowl.ui.internal.ApplicationWorkbenchWindowAdvisor;
import org.rssowl.ui.internal.OwlUI;
import org.rssowl.ui.internal.util.JobRunner;
import org.rssowl.ui.internal.util.LayoutUtils;
import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
/**
* @author bpasero
*/
public class CleanUpSummaryPage extends WizardPage {
private CheckboxTreeViewer fViewer;
private ResourceManager fResources;
private Button fSelectAll;
private Button fDeselectAll;
/* Summary Label Provider */
class SummaryLabelProvider extends LabelProvider implements IFontProvider, IColorProvider {
private Color fGradientFgColor;
private Color fGradientBgColor;
private Color fGradientEndColor;
private Color fGroupFgColor;
SummaryLabelProvider() {
fGradientFgColor = OwlUI.getColor(fResources, OwlUI.GROUP_GRADIENT_FG_COLOR);
fGradientBgColor = OwlUI.getColor(fResources, OwlUI.GROUP_GRADIENT_BG_COLOR);
fGradientEndColor = OwlUI.getColor(fResources, OwlUI.GROUP_GRADIENT_END_COLOR);
fGroupFgColor = OwlUI.getColor(fResources, OwlUI.GROUP_FG_COLOR);
}
@Override
public String getText(Object element) {
if (element instanceof CleanUpGroup)
return ((CleanUpGroup) element).getLabel();
return ((CleanUpTask) element).getLabel();
}
@Override
public Image getImage(Object element) {
if (element instanceof CleanUpGroup)
return OwlUI.getImage(fResources, OwlUI.GROUP);
return OwlUI.getImage(fResources, ((CleanUpTask) element).getImage());
}
public Font getFont(Object element) {
if (element instanceof CleanUpGroup)
return OwlUI.getBold(JFaceResources.DEFAULT_FONT);
return null;
}
public Color getBackground(Object element) {
return null;
}
public Color getForeground(Object element) {
if (element instanceof CleanUpGroup)
return fGroupFgColor;
return null;
}
void eraseGroup(Event event) {
Scrollable scrollable = (Scrollable) event.widget;
GC gc = event.gc;
Rectangle area = scrollable.getClientArea();
Rectangle rect = event.getBounds();
/* Paint the selection beyond the end of last column */
expandRegion(event, scrollable, gc, area);
/* Draw Gradient Rectangle */
Color oldForeground = gc.getForeground();
Color oldBackground = gc.getBackground();
/* Gradient */
gc.setForeground(fGradientFgColor);
gc.setBackground(fGradientBgColor);
gc.fillGradientRectangle(0, rect.y, area.width, rect.height, true);
/* Bottom Line */
gc.setForeground(fGradientEndColor);
gc.drawLine(0, rect.y + rect.height - 1, area.width, rect.y + rect.height - 1);
gc.setForeground(oldForeground);
gc.setBackground(oldBackground);
/* Mark as Background being handled */
event.detail &= ~SWT.BACKGROUND;
}
private void expandRegion(Event event, Scrollable scrollable, GC gc, Rectangle area) {
int columnCount;
if (scrollable instanceof Table)
columnCount = ((Table) scrollable).getColumnCount();
else
columnCount = ((Tree) scrollable).getColumnCount();
if (event.index == columnCount - 1 || columnCount == 0) {
int width = area.x + area.width - event.x;
if (width > 0) {
Region region = new Region();
gc.getClipping(region);
region.add(event.x, event.y, width, event.height);
gc.setClipping(region);
region.dispose();
}
}
}
}
/**
* @param pageName
*/
protected CleanUpSummaryPage(String pageName) {
super(pageName, pageName, OwlUI.getImageDescriptor("icons/wizban/cleanup_wiz.gif"));
setMessage("Please review and approve the suggested operations.");
fResources = new LocalResourceManager(JFaceResources.getResources());
}
List<CleanUpTask> getTasks() {
Object[] checkedElements = fViewer.getCheckedElements();
List<CleanUpTask> tasks = new ArrayList<CleanUpTask>(checkedElements.length);
for (Object checkedElement : checkedElements)
if (checkedElement instanceof CleanUpTask)
tasks.add((CleanUpTask) checkedElement);
return tasks;
}
/*
* @see org.eclipse.jface.dialogs.IDialogPage#createControl(org.eclipse.swt.widgets.Composite)
*/
public void createControl(Composite parent) {
Composite container = new Composite(parent, SWT.NONE);
container.setLayout(new GridLayout(1, false));
/* Viewer to select particular Tasks */
fViewer = new CheckboxTreeViewer(container, SWT.BORDER | SWT.FULL_SELECTION);
fViewer.getTree().setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
fViewer.getTree().setData(ApplicationWorkbenchWindowAdvisor.FOCUSLESS_SCROLL_HOOK, new Object());
/* ContentProvider */
fViewer.setContentProvider(new ITreeContentProvider() {
public Object[] getElements(Object inputElement) {
if (inputElement instanceof List<?>)
return ((List<?>) inputElement).toArray();
return new Object[0];
}
public Object[] getChildren(Object parentElement) {
if (parentElement instanceof CleanUpGroup) {
CleanUpGroup group = (CleanUpGroup) parentElement;
return group.getTasks().toArray();
}
return new Object[0];
}
public Object getParent(Object element) {
if (element instanceof CleanUpTask)
return ((CleanUpTask) element).getGroup();
return null;
}
public boolean hasChildren(Object element) {
return element instanceof CleanUpGroup;
}
public void dispose() {}
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {}
});
/* LabelProvider */
final SummaryLabelProvider summaryLabelProvider = new SummaryLabelProvider();
fViewer.setLabelProvider(summaryLabelProvider);
/* Custom Owner Drawn Category */
fViewer.getControl().addListener(SWT.EraseItem, new Listener() {
public void handleEvent(Event event) {
Object element = event.item.getData();
if (element instanceof CleanUpGroup)
summaryLabelProvider.eraseGroup(event);
}
});
/* Listen on Doubleclick */
fViewer.addDoubleClickListener(new IDoubleClickListener() {
public void doubleClick(DoubleClickEvent event) {
IStructuredSelection selection = (IStructuredSelection) event.getSelection();
CleanUpGroup group = selection.getFirstElement() instanceof CleanUpGroup ? (CleanUpGroup) selection.getFirstElement() : null;
/* Expand / Collapse Folder */
if (group != null) {
boolean expandedState = !fViewer.getExpandedState(group);
fViewer.setExpandedState(group, expandedState);
if (expandedState && fViewer.getChecked(group))
setChildsChecked(group, true, true);
}
}
});
/* Update Checks on Selection */
fViewer.getTree().addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
if (e.detail == SWT.CHECK) {
TreeItem item = (TreeItem) e.item;
if (item.getData() instanceof CleanUpGroup)
setChildsChecked((CleanUpGroup) item.getData(), item.getChecked(), true);
if (!item.getChecked() && item.getData() instanceof CleanUpTask)
setParentsChecked((CleanUpTask) item.getData(), false);
}
}
});
/* Update Checks on Expand */
fViewer.addTreeListener(new ITreeViewerListener() {
public void treeExpanded(TreeExpansionEvent event) {
boolean isChecked = fViewer.getChecked(event.getElement());
if (isChecked)
setChildsChecked((CleanUpGroup) event.getElement(), isChecked, false);
}
public void treeCollapsed(TreeExpansionEvent event) {}
});
/* Select All / Deselect All */
Composite buttonContainer = new Composite(container, SWT.NONE);
buttonContainer.setLayout(LayoutUtils.createGridLayout(2, 0, 0));
buttonContainer.setLayoutData(new GridData(SWT.FILL, SWT.BEGINNING, true, false));
fSelectAll = new Button(buttonContainer, SWT.PUSH);
fSelectAll.setText("&Select All");
setButtonLayoutData(fSelectAll);
fSelectAll.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
fViewer.setAllChecked(true);
}
});
fDeselectAll = new Button(buttonContainer, SWT.PUSH);
fDeselectAll.setText("&Deselect All");
setButtonLayoutData(fDeselectAll);
fDeselectAll.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
fViewer.setAllChecked(false);
}
});
setControl(container);
}
private void setChildsChecked(CleanUpGroup cleanUpGroup, boolean checked, boolean onlyExpanded) {
if (!onlyExpanded || fViewer.getExpandedState(cleanUpGroup)) {
List<CleanUpTask> children = cleanUpGroup.getTasks();
for (CleanUpTask child : children)
fViewer.setChecked(child, checked);
}
}
private void setParentsChecked(CleanUpTask cleanUpTask, boolean checked) {
CleanUpGroup parent = cleanUpTask.getGroup();
if (parent != null)
fViewer.setChecked(parent, checked);
}
/*
* @see org.eclipse.jface.dialogs.DialogPage#setVisible(boolean)
*/
@Override
public void setVisible(boolean visible) {
super.setVisible(visible);
/* Generate the Summary */
if (visible) {
CleanUpOptionsPage cleanUpOptionsPage = (CleanUpOptionsPage) getPreviousPage();
FeedSelectionPage feedSelectionPage = (FeedSelectionPage) cleanUpOptionsPage.getPreviousPage();
final Set<IBookMark> selection = feedSelectionPage.getSelection();
final CleanUpOperations operations = cleanUpOptionsPage.getOperations();
IRunnableWithProgress runnable = new IRunnableWithProgress() {
public void run(IProgressMonitor monitor) {
monitor.beginTask("Please wait while generating the preview...", IProgressMonitor.UNKNOWN);
onGenerateSummary(operations, selection);
}
};
try {
getContainer().run(true, false, runnable);
} catch (InvocationTargetException e) {
Activator.getDefault().logError(e.getMessage(), e);
} catch (InterruptedException e) {
Activator.getDefault().logError(e.getMessage(), e);
}
}
}
private void onGenerateSummary(CleanUpOperations operations, Set<IBookMark> selection) {
final CleanUpModel model = new CleanUpModel(operations, selection);
model.generate();
/* Show in Viewer */
JobRunner.runInUIThread(fViewer.getTree(), new Runnable() {
public void run() {
fViewer.setInput(model.getTasks());
fViewer.expandAll();
fViewer.setAllChecked(true);
}
});
}
/*
* @see org.eclipse.jface.wizard.WizardPage#isPageComplete()
*/
@Override
public boolean isPageComplete() {
return isCurrentPage();
}
/*
* @see org.eclipse.jface.dialogs.DialogPage#dispose()
*/
@Override
public void dispose() {
super.dispose();
fResources.dispose();
}
}