/*******************************************************************************
* Copyright (c) 2000, 2008 IBM Corporation and others.
* 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.ui.internal.editors.text;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.BusyIndicator;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.graphics.Font;
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.Control;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.resources.IContainer;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IWorkspaceRoot;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.viewers.CheckStateChangedEvent;
import org.eclipse.jface.viewers.ICheckStateListener;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.ui.dialogs.TypeFilteringDialog;
import org.eclipse.ui.model.WorkbenchContentProvider;
import org.eclipse.ui.model.WorkbenchLabelProvider;
/**
* Dialog for selecting resources.
*
* @since 3.1
*/
class SelectResourcesDialog extends Dialog {
interface IFilter {
boolean accept(IResource resource);
}
private SelectResourcesBlock fResourceGroup;
private List fAcceptedFileTypes = new ArrayList();
private IResource[] fInput;
private String fTitle;
private String fInstruction;
private Label fCountIndication;
private IFilter fAcceptableLocationsFilter;
public SelectResourcesDialog(Shell parentShell, String title, String instruction, IFilter acceptableLocationsFilter) {
super(parentShell);
fTitle= title;
fInstruction= instruction;
fAcceptableLocationsFilter= acceptableLocationsFilter;
}
/*
* @see org.eclipse.jface.dialogs.Dialog#isResizable()
* @since 3.4
*/
protected boolean isResizable() {
return true;
}
public void setInput(IResource[] input) {
fInput= input;
}
public IResource[] getSelectedResources() {
List items= fResourceGroup.getAllCheckedListItems();
return (IResource[]) items.toArray(new IResource[items.size()]);
}
/*
* @see org.eclipse.jface.window.Window#configureShell(org.eclipse.swt.widgets.Shell)
*/
protected void configureShell(Shell newShell) {
super.configureShell(newShell);
if (fTitle != null)
newShell.setText(fTitle);
}
/*
* @see org.eclipse.jface.dialogs.Dialog#createDialogArea(org.eclipse.swt.widgets.Composite)
*/
protected Control createDialogArea(Composite parent) {
Composite composite= (Composite) super.createDialogArea(parent);
Label label= new Label(composite, SWT.LEFT);
label.setText(fInstruction);
label.setLayoutData(new GridData(GridData.FILL_BOTH));
fResourceGroup= new SelectResourcesBlock(composite, ResourcesPlugin.getWorkspace().getRoot(), getResourceProvider(IResource.FOLDER | IResource.PROJECT), WorkbenchLabelProvider.getDecoratingWorkbenchLabelProvider(), getResourceProvider(IResource.FILE), WorkbenchLabelProvider.getDecoratingWorkbenchLabelProvider(), SWT.NONE, useHeightHint(parent));
fResourceGroup.addCheckStateListener(new ICheckStateListener() {
public void checkStateChanged(CheckStateChangedEvent event) {
updateSelectionCount();
}
});
fCountIndication= new Label(composite, SWT.LEFT);
fCountIndication.setLayoutData(new GridData(GridData.FILL_BOTH));
createSelectionButtonGroup(composite);
setInitialSelection();
return composite;
}
private boolean useHeightHint(Composite parent) {
int fontHeight= (parent.getFont().getFontData())[0].getHeight();
int displayHeight= parent.getDisplay().getClientArea().height;
return (displayHeight / fontHeight) > 50;
}
private ITreeContentProvider getResourceProvider(final int resourceType) {
return new WorkbenchContentProvider() {
public Object[] getChildren(Object o) {
if (o instanceof IWorkspaceRoot) {
HashSet projects= new HashSet();
for (int i= 0; i < fInput.length; i++) {
IResource project= fInput[i].getProject();
if ((project.getType() & resourceType) > 0)
projects.add(project);
}
return projects.toArray();
}
if (o instanceof IContainer) {
IResource[] members = null;
try {
members = ((IContainer) o).members();
} catch (CoreException e) {
//just return an empty set of children
return new Object[0];
}
//filter out the desired resource types
ArrayList results = new ArrayList();
for (int i = 0; i < members.length; i++) {
//And the test bits with the resource types to see if they are what we want
if ((members[i].getType() & resourceType) > 0 && (resourceType != IResource.FILE || fAcceptableLocationsFilter == null || fAcceptableLocationsFilter.accept(members[i]))) {
results.add(members[i]);
}
}
return results.toArray();
}
//input element case
if (o instanceof ArrayList)
return ((ArrayList) o).toArray();
return new Object[0];
}
};
}
protected final void createSelectionButtonGroup(Composite parent) {
Font font= parent.getFont();
// top level group
Composite buttonComposite= new Composite(parent, SWT.NONE);
buttonComposite.setFont(parent.getFont());
GridLayout layout= new GridLayout();
layout.numColumns= 3;
layout.makeColumnsEqualWidth= true;
buttonComposite.setLayout(layout);
buttonComposite.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_FILL | GridData.HORIZONTAL_ALIGN_FILL));
Button selectButton= createButton(buttonComposite, IDialogConstants.SELECT_ALL_ID, TextEditorMessages.SelectResourcesDialog_selectAll, false);
SelectionListener listener= new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
fResourceGroup.setAllSelections(true);
updateSelectionCount();
}
};
selectButton.addSelectionListener(listener);
selectButton.setFont(font);
setButtonLayoutData(selectButton);
Button deselectButton= createButton(buttonComposite, IDialogConstants.DESELECT_ALL_ID, TextEditorMessages.SelectResourcesDialog_deselectAll, false);
listener= new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
fResourceGroup.setAllSelections(false);
updateSelectionCount();
}
};
deselectButton.addSelectionListener(listener);
deselectButton.setFont(font);
setButtonLayoutData(deselectButton);
// types edit button
Button selectTypesButton= createButton(buttonComposite, IDialogConstants.SELECT_TYPES_ID, TextEditorMessages.SelectResourcesDialog_filterSelection, false);
listener= new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
handleSelectFileTypes();
}
};
selectTypesButton.addSelectionListener(listener);
selectTypesButton.setFont(font);
setButtonLayoutData(selectTypesButton);
}
protected void handleSelectFileTypes() {
Object[] acceptedFileTypes= queryFileTypes();
if (acceptedFileTypes != null) {
fAcceptedFileTypes= Arrays.asList(acceptedFileTypes);
filterSelection();
}
}
protected Object[] queryFileTypes() {
TypeFilteringDialog dialog= new TypeFilteringDialog(getShell(), fAcceptedFileTypes);
dialog.open();
return dialog.getResult();
}
private void filterSelection() {
final IFilter filter= new IFilter() {
public boolean accept(IResource resource) {
return hasAcceptedFileType(resource);
}
};
List list= fResourceGroup.getAllWhiteCheckedItems();
final IResource[] resources= (IResource[]) list.toArray(new IResource[list.size()]);
Runnable runnable = new Runnable() {
public void run() {
setSelection(resources, filter);
}
};
BusyIndicator.showWhile(getShell().getDisplay(), runnable);
}
protected boolean hasAcceptedFileType(IResource resource) {
if (fAcceptedFileTypes == null)
return true;
String resourceName= resource.getName();
int separatorIndex= resourceName.lastIndexOf("."); //$NON-NLS-1$
if (separatorIndex == -1)
return false;
String extension= resourceName.substring(separatorIndex + 1);
Iterator e= fAcceptedFileTypes.iterator();
while (e.hasNext()) {
if (extension.equalsIgnoreCase((String) e.next()))
return true;
}
return false;
}
protected void setInitialSelection() {
IFilter filter= new IFilter() {
public boolean accept(IResource resource) {
return true;
}
};
setSelection(fInput, filter);
selectAndReveal(fInput[0]);
}
protected void setSelection(IResource[] input, IFilter filter) {
Map selectionMap= new Hashtable();
for (int i= 0; i < input.length; i++) {
IResource resource= input[i];
if ((resource.getType() & IResource.FILE) > 0) {
if (filter.accept(resource)) {
List files= null;
IContainer parent= resource.getParent();
if (selectionMap.containsKey(parent))
files= (List) selectionMap.get(parent);
else
files= new ArrayList();
files.add(resource);
selectionMap.put(parent, files);
}
} else
setSelection(selectionMap, (IContainer) resource, filter);
}
fResourceGroup.updateSelections(selectionMap);
updateSelectionCount();
}
private void setSelection(Map selectionMap, IContainer parent, IFilter filter) {
try {
IResource[] resources= parent.members();
List selections= new ArrayList();
for (int i= 0; i < resources.length; i++) {
IResource resource= resources[i];
if ((resource.getType() & IResource.FILE) > 0) {
if (filter.accept(resource))
selections.add(resource);
} else {
setSelection(selectionMap, (IContainer) resource, filter);
}
}
if (!selections.isEmpty())
selectionMap.put(parent, selections);
} catch (CoreException x) {
//Just return if we can't get any info
return;
}
}
private void selectAndReveal(IResource resource) {
IContainer container= null;
if ((IResource.FILE & resource.getType()) > 0)
container= resource.getParent();
else
container= (IContainer) resource;
fResourceGroup.selectAndReveal(container);
}
private void updateSelectionCount() {
List listItems= fResourceGroup.getAllCheckedListItems();
int checkedFiles= listItems == null ? 0 : listItems.size();
StringBuffer buffer= new StringBuffer();
switch (checkedFiles) {
case 0:
buffer.append(TextEditorMessages.SelectResourcesDialog_noFilesSelected);
break;
case 1:
buffer.append(TextEditorMessages.SelectResourcesDialog_oneFileSelected);
break;
default:
buffer.append(NLSUtility.format(TextEditorMessages.SelectResourcesDialog_nFilesSelected, new Integer(checkedFiles)));
}
fCountIndication.setText(buffer.toString());
Button okButton= getButton(IDialogConstants.OK_ID);
if (okButton != null)
okButton.setEnabled(checkedFiles > 0);
}
}