/*******************************************************************************
* Copyright (c) 2005, 2010 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.wst.css.ui.internal.wizard;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.preference.PreferenceDialog;
import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.jface.text.Document;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.source.ISourceViewer;
import org.eclipse.jface.text.source.SourceViewer;
import org.eclipse.jface.text.source.SourceViewerConfiguration;
import org.eclipse.jface.text.templates.DocumentTemplateContext;
import org.eclipse.jface.text.templates.Template;
import org.eclipse.jface.text.templates.TemplateBuffer;
import org.eclipse.jface.text.templates.TemplateContext;
import org.eclipse.jface.text.templates.TemplateContextType;
import org.eclipse.jface.text.templates.persistence.TemplateStore;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.ITableLabelProvider;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.viewers.TableLayout;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerSorter;
import org.eclipse.jface.wizard.WizardPage;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ControlAdapter;
import org.eclipse.swt.events.ControlEvent;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
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.Link;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableColumn;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.dialogs.PreferencesUtil;
import org.eclipse.wst.css.core.internal.provisional.contenttype.ContentTypeIdForCSS;
import org.eclipse.wst.css.ui.StructuredTextViewerConfigurationCSS;
import org.eclipse.wst.css.ui.internal.CSSUIMessages;
import org.eclipse.wst.css.ui.internal.CSSUIPlugin;
import org.eclipse.wst.css.ui.internal.Logger;
import org.eclipse.wst.css.ui.internal.editor.IHelpContextIds;
import org.eclipse.wst.css.ui.internal.preferences.CSSUIPreferenceNames;
import org.eclipse.wst.css.ui.internal.templates.TemplateContextTypeIdsCSS;
import org.eclipse.wst.sse.core.StructuredModelManager;
import org.eclipse.wst.sse.core.internal.provisional.IStructuredModel;
import org.eclipse.wst.sse.ui.StructuredTextViewerConfiguration;
import org.eclipse.wst.sse.ui.internal.StructuredTextViewer;
import org.eclipse.wst.sse.ui.internal.provisional.style.LineStyleProvider;
/**
* Templates page in new file wizard. Allows users to select a new file
* template to be applied in new file.
*
*/
public class NewCSSTemplatesWizardPage extends WizardPage {
/**
* Content provider for templates
*/
private class TemplateContentProvider implements IStructuredContentProvider {
/** The template store. */
private TemplateStore fStore;
/*
* @see IContentProvider#dispose()
*/
public void dispose() {
fStore = null;
}
/*
* @see IStructuredContentProvider#getElements(Object)
*/
public Object[] getElements(Object input) {
return fStore.getTemplates(TemplateContextTypeIdsCSS.NEW);
}
/*
* @see IContentProvider#inputChanged(Viewer, Object, Object)
*/
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
fStore = (TemplateStore) newInput;
}
}
/**
* Label provider for templates.
*/
private class TemplateLabelProvider extends LabelProvider implements ITableLabelProvider {
/*
* @see org.eclipse.jface.viewers.ITableLabelProvider#getColumnImage(java.lang.Object,
* int)
*/
public Image getColumnImage(Object element, int columnIndex) {
return null;
}
/*
* @see org.eclipse.jface.viewers.ITableLabelProvider#getColumnText(java.lang.Object,
* int)
*/
public String getColumnText(Object element, int columnIndex) {
Template template = (Template) element;
switch (columnIndex) {
case 0 :
return template.getName();
case 1 :
return template.getDescription();
default :
return ""; //$NON-NLS-1$
}
}
}
/** Last selected template name */
private String fLastSelectedTemplateName;
/** The viewer displays the pattern of selected template. */
private SourceViewer fPatternViewer;
/** The table presenting the templates. */
private TableViewer fTableViewer;
/** Template store used by this wizard page */
private TemplateStore fTemplateStore;
/** Checkbox for using templates. */
private Button fUseTemplateButton;
public NewCSSTemplatesWizardPage() {
super("NewCSSTemplatesWizardPage", CSSUIMessages.NewCSSTemplatesWizardPage_0, null); //$NON-NLS-1$
setDescription(CSSUIMessages.NewCSSTemplatesWizardPage_1);
}
/**
* Correctly resizes the table so no phantom columns appear
*
* @param parent
* the parent control
* @param buttons
* the buttons
* @param table
* the table
* @param column1
* the first column
* @param column2
* the second column
* @param column3
* the third column
*/
private void configureTableResizing(final Composite parent, final Table table, final TableColumn column1, final TableColumn column2) {
parent.addControlListener(new ControlAdapter() {
public void controlResized(ControlEvent e) {
Rectangle area = parent.getClientArea();
Point preferredSize = table.computeSize(SWT.DEFAULT, SWT.DEFAULT);
int width = area.width - 2 * table.getBorderWidth();
if (preferredSize.y > area.height) {
// Subtract the scrollbar width from the total column
// width
// if a vertical scrollbar will be required
Point vBarSize = table.getVerticalBar().getSize();
width -= vBarSize.x;
}
Point oldSize = table.getSize();
if (oldSize.x > width) {
// table is getting smaller so make the columns
// smaller first and then resize the table to
// match the client area width
column1.setWidth(width / 2);
column2.setWidth(width / 2);
table.setSize(width, area.height);
}
else {
// table is getting bigger so make the table
// bigger first and then make the columns wider
// to match the client area width
table.setSize(width, area.height);
column1.setWidth(width / 2);
column2.setWidth(width / 2);
}
}
});
}
public void createControl(Composite ancestor) {
Composite parent = new Composite(ancestor, SWT.NONE);
GridLayout layout = new GridLayout();
layout.numColumns = 2;
parent.setLayout(layout);
// create checkbox for user to use CSS Template
fUseTemplateButton = new Button(parent, SWT.CHECK);
fUseTemplateButton.setText(CSSUIMessages.NewCSSTemplatesWizardPage_4);
GridData data = new GridData(SWT.FILL, SWT.FILL, true, false, 2, 1);
fUseTemplateButton.setLayoutData(data);
fUseTemplateButton.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
enableTemplates();
}
});
// create composite for Templates table
Composite innerParent = new Composite(parent, SWT.NONE);
GridLayout innerLayout = new GridLayout();
innerLayout.numColumns = 2;
innerLayout.marginHeight = 0;
innerLayout.marginWidth = 0;
innerParent.setLayout(innerLayout);
GridData gd = new GridData(SWT.FILL, SWT.FILL, true, true, 2, 1);
innerParent.setLayoutData(gd);
Label label = new Label(innerParent, SWT.NONE);
label.setText(CSSUIMessages.NewCSSTemplatesWizardPage_7);
data = new GridData(SWT.FILL, SWT.FILL, true, false, 2, 1);
label.setLayoutData(data);
// create table that displays templates
Table table = new Table(innerParent, SWT.BORDER | SWT.FULL_SELECTION);
data = new GridData(GridData.FILL_BOTH);
data.widthHint = convertWidthInCharsToPixels(2);
data.heightHint = convertHeightInCharsToPixels(10);
data.horizontalSpan = 2;
table.setLayoutData(data);
table.setHeaderVisible(true);
table.setLinesVisible(true);
TableLayout tableLayout = new TableLayout();
table.setLayout(tableLayout);
TableColumn column1 = new TableColumn(table, SWT.NONE);
column1.setText(CSSUIMessages.NewCSSTemplatesWizardPage_2);
TableColumn column2 = new TableColumn(table, SWT.NONE);
column2.setText(CSSUIMessages.NewCSSTemplatesWizardPage_3);
fTableViewer = new TableViewer(table);
fTableViewer.setLabelProvider(new TemplateLabelProvider());
fTableViewer.setContentProvider(new TemplateContentProvider());
fTableViewer.setSorter(new ViewerSorter() {
public int compare(Viewer viewer, Object object1, Object object2) {
if ((object1 instanceof Template) && (object2 instanceof Template)) {
Template left = (Template) object1;
Template right = (Template) object2;
int result = left.getName().compareToIgnoreCase(right.getName());
if (result != 0)
return result;
return left.getDescription().compareToIgnoreCase(right.getDescription());
}
return super.compare(viewer, object1, object2);
}
public boolean isSorterProperty(Object element, String property) {
return true;
}
});
fTableViewer.addSelectionChangedListener(new ISelectionChangedListener() {
public void selectionChanged(SelectionChangedEvent e) {
updateViewerInput();
}
});
// create viewer that displays currently selected template's contents
fPatternViewer = doCreateViewer(parent);
fTemplateStore = CSSUIPlugin.getDefault().getTemplateStore();
fTableViewer.setInput(fTemplateStore);
// Create linked text to just to templates preference page
Link link = new Link(parent, SWT.NONE);
link.setText(CSSUIMessages.NewCSSTemplatesWizardPage_6);
data = new GridData(SWT.END, SWT.FILL, true, false, 2, 1);
link.setLayoutData(data);
link.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
linkClicked();
}
});
configureTableResizing(innerParent, table, column1, column2);
loadLastSavedPreferences();
PlatformUI.getWorkbench().getHelpSystem().setHelp(parent, IHelpContextIds.CSS_NEWWIZARD_TEMPLATE_HELPID);
Dialog.applyDialogFont(parent);
setControl(parent);
}
/**
* Creates, configures and returns a source viewer to present the template
* pattern on the preference page. Clients may override to provide a
* custom source viewer featuring e.g. syntax coloring.
*
* @param parent
* the parent control
* @return a configured source viewer
*/
private SourceViewer createViewer(Composite parent) {
SourceViewerConfiguration sourceViewerConfiguration = new StructuredTextViewerConfiguration() {
StructuredTextViewerConfiguration baseConfiguration = new StructuredTextViewerConfigurationCSS();
public String[] getConfiguredContentTypes(ISourceViewer sourceViewer) {
return baseConfiguration.getConfiguredContentTypes(sourceViewer);
}
public LineStyleProvider[] getLineStyleProviders(ISourceViewer sourceViewer, String partitionType) {
return baseConfiguration.getLineStyleProviders(sourceViewer, partitionType);
}
};
SourceViewer viewer = new StructuredTextViewer(parent, null, null, false, SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL);
viewer.getTextWidget().setFont(JFaceResources.getFont("org.eclipse.wst.sse.ui.textfont")); //$NON-NLS-1$
IStructuredModel scratchModel = StructuredModelManager.getModelManager().createUnManagedStructuredModelFor(ContentTypeIdForCSS.ContentTypeID_CSS);
IDocument document = scratchModel.getStructuredDocument();
viewer.configure(sourceViewerConfiguration);
viewer.setDocument(document);
return viewer;
}
private SourceViewer doCreateViewer(Composite parent) {
Label label = new Label(parent, SWT.NONE);
label.setText(CSSUIMessages.NewCSSTemplatesWizardPage_5);
GridData data = new GridData();
data.horizontalSpan = 2;
label.setLayoutData(data);
SourceViewer viewer = createViewer(parent);
viewer.setEditable(false);
Control control = viewer.getControl();
data = new GridData(GridData.FILL_BOTH);
data.horizontalSpan = 2;
data.heightHint = convertHeightInCharsToPixels(5);
// [261274] - source viewer was growing to fit the max line width of the template
data.widthHint = convertWidthInCharsToPixels(2);
control.setLayoutData(data);
return viewer;
}
/**
* Enable/disable controls in page based on fUseTemplateButton's current
* state.
*/
void enableTemplates() {
boolean enabled = fUseTemplateButton.getSelection();
if (!enabled) {
// save last selected template
Template template = getSelectedTemplate();
if (template != null)
fLastSelectedTemplateName = template.getName();
else
fLastSelectedTemplateName = ""; //$NON-NLS-1$
fTableViewer.setSelection(null);
}
else {
setSelectedTemplate(fLastSelectedTemplateName);
}
fTableViewer.getControl().setEnabled(enabled);
fPatternViewer.getControl().setEnabled(enabled);
}
/**
* Return the template preference page id
*
* @return
*/
private String getPreferencePageId() {
return "org.eclipse.wst.css.ui.preferences.templates"; //$NON-NLS-1$
}
/**
* Get the currently selected template.
*
* @return
*/
private Template getSelectedTemplate() {
Template template = null;
IStructuredSelection selection = (IStructuredSelection) fTableViewer.getSelection();
if (selection.size() == 1) {
template = (Template) selection.getFirstElement();
}
return template;
}
/**
* Returns template string to insert.
*
* @return String to insert or null if none is to be inserted
*/
String getTemplateString() {
String templateString = null;
Template template = getSelectedTemplate();
if (template != null) {
TemplateContextType contextType = CSSUIPlugin.getDefault().getTemplateContextRegistry().getContextType(TemplateContextTypeIdsCSS.NEW);
IDocument document = new Document();
TemplateContext context = new DocumentTemplateContext(contextType, document, 0, 0);
try {
TemplateBuffer buffer = context.evaluate(template);
templateString = buffer.getString();
}
catch (Exception e) {
Logger.log(Logger.WARNING_DEBUG, "Could not create template for new css", e); //$NON-NLS-1$
}
}
return templateString;
}
void linkClicked() {
String pageId = getPreferencePageId();
PreferenceDialog dialog = PreferencesUtil.createPreferenceDialogOn(getShell(), pageId, new String[]{pageId}, null);
dialog.open();
fTableViewer.refresh();
}
/**
* Load the last template name used in New CSS File wizard.
*/
private void loadLastSavedPreferences() {
fLastSelectedTemplateName = ""; //$NON-NLS-1$
boolean setSelection = false;
String templateName = CSSUIPlugin.getDefault().getPreferenceStore().getString(CSSUIPreferenceNames.NEW_FILE_TEMPLATE_NAME);
if (templateName == null || templateName.length() == 0) {
templateName = CSSUIPlugin.getDefault().getPreferenceStore().getString(CSSUIPreferenceNames.NEW_FILE_TEMPLATE_ID);
if (templateName != null && templateName.length() > 0) {
Template template = fTemplateStore.findTemplateById(templateName);
if (template != null) {
fLastSelectedTemplateName = template.getName();
setSelection = true;
}
}
}
else {
fLastSelectedTemplateName = templateName;
setSelection = true;
}
fUseTemplateButton.setSelection(setSelection);
enableTemplates();
}
/**
* Save template name used for next call to New CSS File wizard.
*/
void saveLastSavedPreferences() {
String templateName = ""; //$NON-NLS-1$
Template template = getSelectedTemplate();
if (template != null) {
templateName = template.getName();
}
CSSUIPlugin.getDefault().getPreferenceStore().setValue(CSSUIPreferenceNames.NEW_FILE_TEMPLATE_NAME, templateName);
CSSUIPlugin.getDefault().savePluginPreferences();
}
/**
* Select a template in the table viewer given the template name. If
* template name cannot be found or templateName is null, just select
* first item in table. If no items in table select nothing.
*
* @param templateName
*/
private void setSelectedTemplate(String templateName) {
Object template = null;
if (templateName != null && templateName.length() > 0) {
// pick the last used template
template = fTemplateStore.findTemplate(templateName, TemplateContextTypeIdsCSS.NEW);
}
// no record of last used template so just pick first element
if (template == null) {
// just pick first element
template = fTableViewer.getElementAt(0);
}
if (template != null) {
IStructuredSelection selection = new StructuredSelection(template);
fTableViewer.setSelection(selection, true);
}
}
/**
* Updates the pattern viewer.
*/
void updateViewerInput() {
Template template = getSelectedTemplate();
if (template != null) {
fPatternViewer.getDocument().set(template.getPattern());
}
else {
fPatternViewer.getDocument().set(""); //$NON-NLS-1$
}
}
}