/*******************************************************************************
* Copyright (c) 2010, 2012 SAP AG 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:
* Tomasz Zarna <Tomasz.Zarna@pl.ibm.com> - Allow to save patches in Workspace
* Daniel Megert <daniel_megert@ch.ibm.com> - Create Patch... should remember previously chosen location
* Daniel Megert <daniel_megert@ch.ibm.com> - Create Patch wizard must validate initial input
*******************************************************************************/
package org.eclipse.egit.ui.internal.history;
import java.io.File;
import java.util.ArrayList;
import org.eclipse.core.resources.IContainer;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IWorkspace;
import org.eclipse.core.resources.IWorkspaceRoot;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Path;
import org.eclipse.egit.core.op.CreatePatchOperation;
import org.eclipse.egit.ui.UIUtils;
import org.eclipse.egit.ui.internal.UIIcons;
import org.eclipse.egit.ui.internal.UIText;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.TitleAreaDialog;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.viewers.DoubleClickEvent;
import org.eclipse.jface.viewers.IDoubleClickListener;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.jface.wizard.WizardPage;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.graphics.Image;
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.Event;
import org.eclipse.swt.widgets.FileDialog;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
import org.eclipse.ui.model.BaseWorkbenchContentProvider;
import org.eclipse.ui.model.WorkbenchLabelProvider;
import org.eclipse.ui.views.navigator.ResourceComparator;
/**
* A wizard page to choose the target location.
* <p>
* Extracted from {@link GitCreatePatchWizard}
*/
public class LocationPage extends WizardPage {
private static final String PATH_KEY = "GitCreatePatchWizard.LocationPage.path"; //$NON-NLS-1$
private static final String LOCATION_KEY = "GitCreatePatchWizard.LocationPage.location"; //$NON-NLS-1$
private static final String LOCATION_VALUE_CLIPBOARD = "clipboard"; //$NON-NLS-1$
private static final String LOCATION_VALUE_FILE_SYSTEM = "filesystem"; //$NON-NLS-1$
private static final String LOCATION_VALUE_WORKSPACE = "workspace"; //$NON-NLS-1$
private Button cpRadio;
Button fsRadio;
private Text fsPathText;
private Button fsBrowseButton;
private Button wsRadio;
private Text wsPathText;
private Button wsBrowseButton;
private boolean wsBrowsed = false;
private boolean pageValid;
private IContainer wsSelectedContainer;
private static class LocationPageContentProvider extends
BaseWorkbenchContentProvider {
//Never show closed projects
boolean showClosedProjects = false;
public Object[] getChildren(Object element) {
if (element instanceof IWorkspace) {
// check if closed projects should be shown
IProject[] allProjects = ((IWorkspace) element).getRoot().getProjects();
if (showClosedProjects)
return allProjects;
ArrayList<IProject> accessibleProjects = new ArrayList<IProject>();
for (IProject project : allProjects)
if (project.isOpen())
accessibleProjects.add(project);
return accessibleProjects.toArray();
}
return super.getChildren(element);
}
}
private class WorkspaceDialog extends TitleAreaDialog {
protected TreeViewer wsTreeViewer;
protected Text wsFilenameText;
protected Image dlgTitleImage;
private boolean modified = false;
public WorkspaceDialog(Shell shell) {
super(shell);
}
protected Control createContents(Composite parent) {
Control control = super.createContents(parent);
setTitle(UIText.GitCreatePatchWizard_WorkspacePatchDialogTitle);
setMessage(UIText.GitCreatePatchWizard_WorkspacePatchDialogDescription);
//create title image
dlgTitleImage = UIIcons.WIZBAN_CREATE_PATCH.createImage();
setTitleImage(dlgTitleImage);
return control;
}
protected Control createDialogArea(Composite parent){
Composite parentComposite = (Composite) super.createDialogArea(parent);
// create a composite with standard margins and spacing
Composite composite = new Composite(parentComposite, SWT.NONE);
GridLayout layout = new GridLayout();
layout.marginHeight = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN);
layout.marginWidth = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_MARGIN);
layout.verticalSpacing = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_SPACING);
layout.horizontalSpacing = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING);
composite.setLayout(layout);
composite.setLayoutData(new GridData(GridData.FILL_BOTH));
composite.setFont(parentComposite.getFont());
getShell().setText(UIText.GitCreatePatchWizard_WorkspacePatchDialogSavePatch);
wsTreeViewer = new TreeViewer(composite, SWT.BORDER);
final GridData gd= new GridData(SWT.FILL, SWT.FILL, true, true);
gd.widthHint= 550;
gd.heightHint= 250;
wsTreeViewer.getTree().setLayoutData(gd);
wsTreeViewer.setContentProvider(new LocationPageContentProvider());
wsTreeViewer.setComparator(new ResourceComparator(ResourceComparator.NAME));
wsTreeViewer.setLabelProvider(new WorkbenchLabelProvider());
wsTreeViewer.setInput(ResourcesPlugin.getWorkspace());
//Open to whatever is selected in the workspace field
IPath existingWorkspacePath = new Path(wsPathText.getText());
//Ensure that this workspace path is valid
IResource selectedResource = ResourcesPlugin.getWorkspace().getRoot().findMember(existingWorkspacePath);
if (selectedResource != null) {
wsTreeViewer.expandToLevel(selectedResource, 0);
wsTreeViewer.setSelection(new StructuredSelection(selectedResource));
}
final Composite group = new Composite(composite, SWT.NONE);
layout = new GridLayout(2, false);
layout.marginWidth = 0;
group.setLayout(layout);
group.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));
final Label label = new Label(group, SWT.NONE);
label.setLayoutData(new GridData());
label.setText(UIText.GitCreatePatchWizard_WorkspacePatchDialogFileName);
wsFilenameText = new Text(group,SWT.BORDER);
wsFilenameText.setLayoutData(new GridData(SWT.FILL, SWT.TOP, true, false));
setupListeners();
return parent;
}
protected Button createButton(Composite parent, int id,
String label, boolean defaultButton) {
Button button = super.createButton(parent, id, label,
defaultButton);
if (id == IDialogConstants.OK_ID)
button.setEnabled(false);
return button;
}
private void validateDialog() {
String fileName = wsFilenameText.getText();
if (fileName.equals("")) //$NON-NLS-1$
if (modified) {
setErrorMessage(UIText.GitCreatePatchWizard_WorkspacePatchDialogEnterFileName);
getButton(IDialogConstants.OK_ID).setEnabled(false);
return;
} else {
setErrorMessage(null);
getButton(IDialogConstants.OK_ID).setEnabled(false);
return;
}
// make sure that the filename is valid
if (!(ResourcesPlugin.getWorkspace().validateName(fileName,
IResource.FILE)).isOK() && modified) {
setErrorMessage(UIText.GitCreatePatchWizard_WorkspacePatchEnterValidFileName);
getButton(IDialogConstants.OK_ID).setEnabled(false);
return;
}
// Make sure that a container has been selected
if (getSelectedContainer() == null) {
setErrorMessage(UIText.GitCreatePatchWizard_WorkspacePatchDialogEnterValidLocation);
getButton(IDialogConstants.OK_ID).setEnabled(false);
return;
} else {
IWorkspace workspace = ResourcesPlugin.getWorkspace();
IPath fullPath = wsSelectedContainer.getFullPath().append(
fileName);
if (workspace.getRoot().getFolder(fullPath).exists()) {
setErrorMessage(UIText.GitCreatePatchWizard_WorkspacePatchFolderExists);
getButton(IDialogConstants.OK_ID).setEnabled(false);
return;
}
}
setErrorMessage(null);
getButton(IDialogConstants.OK_ID).setEnabled(true);
}
protected void okPressed() {
IFile file = wsSelectedContainer.getFile(new Path(
wsFilenameText.getText()));
if (file != null)
wsPathText.setText(file.getFullPath().toString());
validatePage();
super.okPressed();
}
private IContainer getSelectedContainer() {
Object obj = ((IStructuredSelection)wsTreeViewer.getSelection()).getFirstElement();
if (obj instanceof IContainer)
wsSelectedContainer = (IContainer) obj;
else if (obj instanceof IFile)
wsSelectedContainer = ((IFile) obj).getParent();
return wsSelectedContainer;
}
protected void cancelPressed() {
validatePage();
super.cancelPressed();
}
public boolean close() {
if (dlgTitleImage != null)
dlgTitleImage.dispose();
return super.close();
}
void setupListeners(){
wsTreeViewer.addSelectionChangedListener(
new ISelectionChangedListener() {
public void selectionChanged(SelectionChangedEvent event) {
IStructuredSelection s = (IStructuredSelection)event.getSelection();
Object obj=s.getFirstElement();
if (obj instanceof IContainer)
wsSelectedContainer = (IContainer) obj;
else if (obj instanceof IFile){
IFile tempFile = (IFile) obj;
wsSelectedContainer = tempFile.getParent();
wsFilenameText.setText(tempFile.getName());
}
validateDialog();
}
});
wsTreeViewer.addDoubleClickListener(
new IDoubleClickListener() {
public void doubleClick(DoubleClickEvent event) {
ISelection s= event.getSelection();
if (s instanceof IStructuredSelection) {
Object item = ((IStructuredSelection)s).getFirstElement();
if (wsTreeViewer.getExpandedState(item))
wsTreeViewer.collapseToLevel(item, 1);
else
wsTreeViewer.expandToLevel(item, 1);
}
validateDialog();
}
});
wsFilenameText.addModifyListener(new ModifyListener() {
public void modifyText(ModifyEvent e) {
modified = true;
validateDialog();
}
});
}
}
/**
* @param pageName
* @param title
* @param titleImage
*/
protected LocationPage(String pageName, String title,
ImageDescriptor titleImage) {
super(pageName, title, titleImage);
}
public void createControl(Composite parent) {
final Composite composite = new Composite(parent, SWT.NULL);
GridLayout gridLayout = new GridLayout();
gridLayout.numColumns = 3;
composite.setLayout(gridLayout);
composite.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
initializeDialogUnits(composite);
String selectedOption= getDialogSettings().get(LOCATION_KEY);
if (selectedOption == null)
selectedOption = LOCATION_VALUE_CLIPBOARD;
// clipboard
GridData gd = new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
gd.horizontalSpan = 3;
cpRadio = new Button(composite, SWT.RADIO);
cpRadio.setText(UIText.GitCreatePatchWizard_Clipboard);
cpRadio.setLayoutData(gd);
cpRadio.setSelection(LOCATION_VALUE_CLIPBOARD.equals(selectedOption));
// filesystem
boolean isFileSystemSelected = LOCATION_VALUE_FILE_SYSTEM.equals(selectedOption);
fsRadio = new Button(composite, SWT.RADIO);
fsRadio.setText(UIText.GitCreatePatchWizard_File);
fsRadio.setSelection(isFileSystemSelected);
fsPathText = new Text(composite, SWT.BORDER);
gd = new GridData(GridData.FILL_HORIZONTAL);
fsPathText.setLayoutData(gd);
fsPathText.setText(createFileName());
fsPathText.setEnabled(isFileSystemSelected);
fsBrowseButton = new Button(composite, SWT.PUSH);
fsBrowseButton.setText(UIText.GitCreatePatchWizard_Browse);
UIUtils.setButtonLayoutData(fsBrowseButton);
fsBrowseButton.setEnabled(isFileSystemSelected);
// workspace
boolean isWorkspaceSelected = LOCATION_VALUE_WORKSPACE.equals(selectedOption);
wsRadio = new Button(composite, SWT.RADIO);
wsRadio.setText(UIText.GitCreatePatchWizard_Workspace);
wsRadio.setSelection(isWorkspaceSelected);
wsPathText = new Text(composite, SWT.BORDER);
wsPathText.setLayoutData(gd);
wsPathText.setEnabled(isWorkspaceSelected);
wsBrowseButton = new Button(composite, SWT.PUSH);
wsBrowseButton.setText(UIText.GitCreatePatchWizard_Browse);
UIUtils.setButtonLayoutData(wsBrowseButton);
wsBrowseButton.setEnabled(isWorkspaceSelected);
cpRadio.addListener(SWT.Selection, new Listener() {
public void handleEvent(Event event) {
// disable other input controls
if (((Button) event.widget).getSelection()) {
fsPathText.setEnabled(false);
fsBrowseButton.setEnabled(false);
wsPathText.setEnabled(false);
wsBrowseButton.setEnabled(false);
getDialogSettings().put(LOCATION_KEY, LOCATION_VALUE_CLIPBOARD);
validatePage();
}
}
});
fsRadio.addListener(SWT.Selection, new Listener() {
public void handleEvent(Event event) {
if (((Button) event.widget).getSelection()) {
// enable filesystem input controls
fsPathText.setEnabled(true);
fsBrowseButton.setEnabled(true);
wsPathText.setEnabled(false);
wsBrowseButton.setEnabled(false);
// set focus to filesystem input text control
fsPathText.setFocus();
getDialogSettings().put(LOCATION_KEY, LOCATION_VALUE_FILE_SYSTEM);
validatePage();
}
}
});
fsPathText.addModifyListener(new ModifyListener() {
public void modifyText(ModifyEvent e) {
if (validatePage()) {
IPath filePath= Path.fromOSString(fsPathText.getText()).removeLastSegments(1);
getDialogSettings().put(PATH_KEY, filePath.toPortableString());
}
}
});
fsBrowseButton.addListener(SWT.Selection, new Listener() {
public void handleEvent(Event event) {
final FileDialog dialog = new FileDialog(getShell(),
SWT.PRIMARY_MODAL | SWT.SAVE);
if (pageValid) {
final File file = new File(fsPathText.getText());
dialog.setFilterPath(file.getParent());
dialog.setFileName(file.getName());
} else
dialog.setFileName(""); //$NON-NLS-1$
dialog.setText(""); //$NON-NLS-1$
final String path = dialog.open();
if (path != null)
fsPathText.setText(new Path(path).toOSString());
validatePage();
}
});
wsRadio.addListener(SWT.Selection, new Listener() {
public void handleEvent(Event event) {
if (((Button) event.widget).getSelection()) {
fsPathText.setEnabled(false);
fsBrowseButton.setEnabled(false);
// enable workspace input controls
wsPathText.setEnabled(true);
wsBrowseButton.setEnabled(true);
// set focus to workspace input text control
wsPathText.setFocus();
getDialogSettings().put(LOCATION_KEY, LOCATION_VALUE_WORKSPACE);
validatePage();
}
}
});
wsPathText.addModifyListener(new ModifyListener() {
public void modifyText(ModifyEvent e) {
if (validatePage()) {
IPath filePath= Path.fromOSString(wsPathText.getText()).removeLastSegments(1);
getDialogSettings().put(PATH_KEY, filePath.toPortableString());
}
}
});
wsBrowseButton.addListener(SWT.Selection, new Listener() {
public void handleEvent(Event event) {
final WorkspaceDialog dialog = new WorkspaceDialog(getShell());
wsBrowsed = true;
dialog.open();
validatePage();
}
});
Dialog.applyDialogFont(composite);
setControl(composite);
validatePage();
}
private String createFileName() {
String suggestedFileName = getCommit() != null ? CreatePatchOperation
.suggestFileName(getCommit()) : getRepository().getWorkTree()
.getName().concat(".patch"); //$NON-NLS-1$
String path = getDialogSettings().get(PATH_KEY);
if (path != null)
return Path.fromPortableString(path).append(suggestedFileName).toOSString();
return (new File(System.getProperty("user.dir", ""), suggestedFileName)).getPath(); //$NON-NLS-1$ //$NON-NLS-2$
}
private RevCommit getCommit() {
return ((GitCreatePatchWizard)getWizard()).getCommit();
}
private Repository getRepository() {
return ((GitCreatePatchWizard)getWizard()).getRepository();
}
/**
* Allow the user to finish if a valid file has been entered.
*
* @return page is valid
*/
protected boolean validatePage() {
if (wsRadio.getSelection())
pageValid = validateWorkspaceLocation();
else if (fsRadio.getSelection())
pageValid = validateFilesystemLocation();
else if (cpRadio.getSelection())
pageValid = true;
/**
* Avoid draw flicker by clearing error message if all is valid.
*/
if (pageValid) {
setMessage(null);
setErrorMessage(null);
}
setPageComplete(pageValid);
return pageValid;
}
/**
* The following conditions must hold for the file system location to be
* valid:
* - the path must be valid and non-empty
* - the path must be absolute
* - the specified file must be of type file
* - the parent must exist (new folders can be created via the browse button)
*
* @return if the location is valid
*/
private boolean validateFilesystemLocation() {
final String pathString = fsPathText.getText().trim();
if (pathString.length() == 0
|| !new Path("").isValidPath(pathString)) { //$NON-NLS-1$
setErrorMessage(UIText.GitCreatePatchWizard_FilesystemError);
return false;
}
final File file = new File(pathString);
if (!file.isAbsolute()) {
setErrorMessage(UIText.GitCreatePatchWizard_FilesystemInvalidError);
return false;
}
if (file.isDirectory()) {
setErrorMessage(UIText.GitCreatePatchWizard_FilesystemDirectoryError);
return false;
}
if (pathString.endsWith("/") || pathString.endsWith("\\")) { //$NON-NLS-1$//$NON-NLS-2$
setErrorMessage(UIText.GitCreatePatchWizard_FilesystemDirectoryNotExistsError);
return false;
}
final File parent = file.getParentFile();
if (!(parent.exists() && parent.isDirectory())) {
setErrorMessage(UIText.GitCreatePatchWizard_FilesystemDirectoryNotExistsError);
return false;
}
return true;
}
/**
* The following conditions must hold for the workspace location to be valid:
* - a parent must be selected in the workspace tree view
* - the resource name must be valid
*
* @return if the location is valid
*/
private boolean validateWorkspaceLocation() {
//make sure that the field actually has a filename in it - making
//sure that the user has had a chance to browse the workspace first
if (wsPathText.getText().equals("")){ //$NON-NLS-1$
if (wsRadio.getSelection() && wsBrowsed)
setErrorMessage(UIText.GitCreatePatchWizard_WorkspacePatchEnterValidFileName);
else
setErrorMessage(UIText.GitCreatePatchWizard_WorkspacePatchSelectByBrowsing);
return false;
}
//Make sure that all the segments but the last one (i.e. project + all
//folders) exist - file doesn't have to exist. It may have happened that
//some folder refactoring has been done since this path was last saved.
//
// The path will always be in format project/{folders}*/file - this
// is controlled by the workspace location dialog and by
// validatePath method when path has been entered manually.
IPath pathToWorkspaceFile = new Path(wsPathText.getText());
IStatus status = ResourcesPlugin.getWorkspace().validatePath(wsPathText.getText(), IResource.FILE);
if (status.isOK()) {
//Trim file name from path
IPath containerPath = pathToWorkspaceFile.removeLastSegments(1);
IResource container = ResourcesPlugin.getWorkspace().getRoot().findMember(containerPath);
if (container == null) {
if (wsRadio.getSelection())
setErrorMessage(UIText.GitCreatePatchWizard_WorkspacePatchSelectByBrowsing);
return false;
} else if (!container.isAccessible()) {
if (wsRadio.getSelection())
setErrorMessage(UIText.GitCreatePatchWizard_WorkspacePatchProjectClosed);
return false;
} else if (ResourcesPlugin.getWorkspace().getRoot().getFolder(
pathToWorkspaceFile).exists()) {
setErrorMessage(UIText.GitCreatePatchWizard_WorkspacePatchFolderExists);
return false;
}
} else {
setErrorMessage(status.getMessage());
return false;
}
return true;
}
/**
* @return answers a full path to a file system file or
* <code>null</code> if the user selected to save the patch in
* the clipboard.
*/
public File getFile() {
if (pageValid && fsRadio.getSelection())
return new File(fsPathText.getText().trim());
if (pageValid && wsRadio.getSelection()) {
final String filename= wsPathText.getText().trim();
IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot();
final IFile file = root.getFile(new Path(filename));
return file.getLocation().toFile();
}
return null;
}
}