/*
* Copyright 2010 JBoss Inc
*
* 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 org.drools.eclipse.flow.common.editor.action;
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.ResourcesPlugin;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.IDialogSettings;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.dialogs.TitleAreaDialog;
import org.eclipse.osgi.util.NLS;
import org.eclipse.swt.SWT;
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.Listener;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.internal.ide.IDEInternalWorkbenchImages;
import org.eclipse.ui.internal.ide.IDEWorkbenchMessages;
import org.eclipse.ui.internal.ide.IDEWorkbenchPlugin;
import org.eclipse.ui.internal.ide.misc.ResourceAndContainerGroup;
public class ExportImageDialog extends TitleAreaDialog {
private static final String DIALOG_SETTINGS_SECTION = "SaveAsDialogSettings"; //$NON-NLS-1$
private IFile originalFile = null;
private String originalName = null;
private IPath result;
// widgets
private ResourceAndContainerGroup resourceGroup;
private Button okButton;
/**
* Image for title area
*/
private Image dlgTitleImage = null;
/**
* Creates a new Save As dialog for no specific file.
*
* @param parentShell the parent shell
*/
public ExportImageDialog(Shell parentShell) {
super(parentShell);
}
protected void configureShell(Shell shell) {
super.configureShell(shell);
shell.setText("Export PNG image");
}
protected Control createContents(Composite parent) {
Control contents = super.createContents(parent);
initializeControls();
validatePage();
resourceGroup.setFocus();
setTitle("Export PNG image");
dlgTitleImage = IDEInternalWorkbenchImages.getImageDescriptor(
IDEInternalWorkbenchImages.IMG_DLGBAN_SAVEAS_DLG).createImage();
setTitleImage(dlgTitleImage);
setMessage("Export the selected process as a PNG image");
return contents;
}
public boolean close() {
if (dlgTitleImage != null) {
dlgTitleImage.dispose();
}
return super.close();
}
protected void createButtonsForButtonBar(Composite parent) {
okButton = createButton(parent, IDialogConstants.OK_ID,
IDialogConstants.OK_LABEL, true);
createButton(parent, IDialogConstants.CANCEL_ID,
IDialogConstants.CANCEL_LABEL, false);
}
protected Control createDialogArea(Composite parent) {
// top level composite
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());
Listener listener = new Listener() {
public void handleEvent(Event event) {
setDialogComplete(validatePage());
}
};
resourceGroup = new ResourceAndContainerGroup(
composite,
listener,
IDEWorkbenchMessages.SaveAsDialog_fileLabel, IDEWorkbenchMessages.SaveAsDialog_file);
resourceGroup.setAllowExistingResources(true);
return parentComposite;
}
/**
* Returns the full path entered by the user.
* <p>
* Note that the file and container might not exist and would need to be created.
* See the <code>IFile.create</code> method and the
* <code>ContainerGenerator</code> class.
* </p>
*
* @return the path, or <code>null</code> if Cancel was pressed
*/
public IPath getResult() {
return result;
}
/**
* Initializes the controls of this dialog.
*/
private void initializeControls() {
if (originalFile != null) {
resourceGroup.setContainerFullPath(originalFile.getParent()
.getFullPath());
String fileName = originalFile.getName();
int index = fileName.lastIndexOf(".");
if (index != -1) {
fileName = fileName.substring(0, index);
}
fileName += ".png";
resourceGroup.setResource(fileName);
} else if (originalName != null) {
resourceGroup.setResource(originalName);
}
setDialogComplete(validatePage());
}
/* (non-Javadoc)
* Method declared on Dialog.
*/
protected void okPressed() {
// Get new path.
IPath path = resourceGroup.getContainerFullPath().append(
resourceGroup.getResource());
//If the user does not supply a file extension and if the save
//as dialog was provided a default file name append the extension
//of the default filename to the new name
if (path.getFileExtension() == null) {
if (originalFile != null && originalFile.getFileExtension() != null) {
path = path.addFileExtension(originalFile.getFileExtension());
} else if (originalName != null) {
int pos = originalName.lastIndexOf('.');
if (++pos > 0 && pos < originalName.length()) {
path = path.addFileExtension(originalName.substring(pos));
}
}
}
// If the path already exists then confirm overwrite.
IFile file = ResourcesPlugin.getWorkspace().getRoot().getFile(path);
if (file.exists()) {
String[] buttons = new String[] { IDialogConstants.YES_LABEL,
IDialogConstants.NO_LABEL, IDialogConstants.CANCEL_LABEL };
String question = NLS.bind(
IDEWorkbenchMessages.SaveAsDialog_overwriteQuestion, path
.toString());
MessageDialog d = new MessageDialog(getShell(),
IDEWorkbenchMessages.Question,
null, question, MessageDialog.QUESTION, buttons, 0);
int overwrite = d.open();
switch (overwrite) {
case 0: // Yes
break;
case 1: // No
return;
case 2: // Cancel
default:
cancelPressed();
return;
}
}
// Store path and close.
result = path;
close();
}
/**
* Sets the completion state of this dialog and adjusts the enable state of
* the Ok button accordingly.
*
* @param value <code>true</code> if this dialog is compelete, and
* <code>false</code> otherwise
*/
protected void setDialogComplete(boolean value) {
okButton.setEnabled(value);
}
/**
* Sets the original file to use.
*
* @param originalFile the original file
*/
public void setOriginalFile(IFile originalFile) {
this.originalFile = originalFile;
}
/**
* Set the original file name to use.
* Used instead of <code>setOriginalFile</code>
* when the original resource is not an IFile.
* Must be called before <code>create</code>.
* @param originalName default file name
*/
public void setOriginalName(String originalName) {
this.originalName = originalName;
}
/**
* Returns whether this page's visual components all contain valid values.
*
* @return <code>true</code> if valid, and <code>false</code> otherwise
*/
private boolean validatePage() {
if (!resourceGroup.areAllValuesValid()) {
if (!resourceGroup.getResource().equals("")) { //$NON-NLS-1$
setErrorMessage(resourceGroup.getProblemMessage());
} else {
setErrorMessage(null);
}
return false;
}
String resourceName = resourceGroup.getResource();
IWorkspace workspace = ResourcesPlugin.getWorkspace();
// Do not allow a closed project to be selected
IPath fullPath = resourceGroup.getContainerFullPath();
if (fullPath != null) {
String projectName = fullPath.segment(0);
IStatus isValidProjectName = workspace.validateName(projectName, IResource.PROJECT);
if(isValidProjectName.isOK()) {
IProject project = workspace.getRoot().getProject(projectName);
if(!project.isOpen()) {
setErrorMessage(IDEWorkbenchMessages.SaveAsDialog_closedProjectMessage);
return false;
}
}
}
IStatus result = workspace.validateName(resourceName, IResource.FILE);
if (!result.isOK()){
setErrorMessage(result.getMessage());
return false;
}
setErrorMessage(null);
return true;
}
/* (non-Javadoc)
* @see org.eclipse.jface.window.Dialog#getDialogBoundsSettings()
*
* @since 3.2
*/
protected IDialogSettings getDialogBoundsSettings() {
IDialogSettings settings = IDEWorkbenchPlugin.getDefault().getDialogSettings();
IDialogSettings section = settings.getSection(DIALOG_SETTINGS_SECTION);
if (section == null) {
section = settings.addNewSection(DIALOG_SETTINGS_SECTION);
}
return section;
}
/*
* (non-Javadoc)
* @see org.eclipse.jface.dialogs.Dialog#isResizable()
*/
protected boolean isResizable() {
return true;
}
}