tests/org.eclipse.e4.ui.tests.css.swt/tkuiTestsToRefactor/swt/test/org/akrogen/tkui/css/swt/examples/csseditors/AbstractCSSSWTEditor.java - platform/eclipse.platform.ui - Git at Google

 /*******************************************************************************
  * Copyright (c) 2008 Angelo Zerr 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:
  *     Angelo Zerr <angelo.zerr@gmail.com> - initial API and implementation
  *******************************************************************************/
 package org.akrogen.tkui.css.swt.examples.csseditors;

 import java.io.File;
 import java.util.ArrayList;

 import org.akrogen.tkui.css.core.css2.CSS2FontPropertiesHelpers;
 import org.akrogen.tkui.css.core.dom.IElementProvider;
 import org.akrogen.tkui.css.core.dom.properties.css2.CSS2FontProperties;
 import org.akrogen.tkui.css.core.engine.CSSEngine;
 import org.akrogen.tkui.css.core.examples.csseditors.AbstractCSSEditor;
 import org.akrogen.tkui.css.core.serializers.CSSSerializerConfiguration;
 import org.akrogen.tkui.css.swt.dom.SWTElementProvider;
 import org.akrogen.tkui.css.swt.dom.html.SWTHTMLElementProvider;
 import org.akrogen.tkui.css.swt.engine.CSSSWTEngineImpl;
 import org.akrogen.tkui.css.swt.serializers.CSSSWTSerializerConfiguration;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.custom.SashForm;
 import org.eclipse.swt.custom.StyledText;
 import org.eclipse.swt.events.KeyAdapter;
 import org.eclipse.swt.events.KeyEvent;
 import org.eclipse.swt.events.ModifyEvent;
 import org.eclipse.swt.events.ModifyListener;
 import org.eclipse.swt.events.MouseAdapter;
 import org.eclipse.swt.events.MouseEvent;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.graphics.FontData;
 import org.eclipse.swt.graphics.Point;
 import org.eclipse.swt.graphics.RGB;
 import org.eclipse.swt.layout.FillLayout;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.Button;
 import org.eclipse.swt.widgets.ColorDialog;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Display;
 import org.eclipse.swt.widgets.FileDialog;
 import org.eclipse.swt.widgets.FontDialog;
 import org.eclipse.swt.widgets.Group;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.List;
 import org.eclipse.swt.widgets.Menu;
 import org.eclipse.swt.widgets.MenuItem;
 import org.eclipse.swt.widgets.Shell;
 import org.eclipse.swt.widgets.Text;
 import org.w3c.dom.css.CSSValue;

 /**
  * Abstract CSS SWT Editor.
  *
  * @version 1.0.0
  * @author <a href="mailto:angelo.zerr@gmail.com">Angelo ZERR</a>
  *
  */
 public abstract class AbstractCSSSWTEditor extends AbstractCSSEditor {

 	protected static final String[] CSS_FILE_EXTENSION = { "*.css" };

 	private Display display;

 	/**
 	 * Textarea wich contains content of CSS style sheet.
 	 */
 	private StyledText textArea;

 	private Button cacheResourcesCheckbox;

 	/**
 	 * HTML checkbox to set if CSS must be typed with HTML syntaxe or SWT
 	 * syntax.
 	 */
 	private Button htmlCheckbox;

 	/**
 	 * Label wich display time elapsed when CSS Engine apply styles.
 	 */
 	private Label statusLabel;

 	/**
 	 * Apply style when text area change
 	 */
 	private Button applyStyleWhenTextAreaChangeCheckbox;

 	/**
 	 * Launch Apply style
 	 */
 	private Button applyStyleToShellCheckbox;

 	private Shell shell;

 	private Composite leftPanel;

 	private List cssFilesWidget;

 	private java.util.List cssFiles = new ArrayList();

 	private Text selectedCSSPropertyNameText = null;

 	private Text selectedCSSPropertyValueText = null;

 	protected int currentLine = -1;

 	protected AbstractCSSSWTEditor(String nativeWidgetDir,
 			String[] styleFileExtension) {
 		super(nativeWidgetDir);
 	}

 	protected AbstractCSSSWTEditor() {
 		super("swt");
 	}

 	public void display() {

 		display = new Display();
 		shell = new Shell(display, SWT.SHELL_TRIM);
 		GridLayout layout = new GridLayout();
 		layout.marginWidth = 0;
 		layout.marginHeight = 0;
 		layout.verticalSpacing = 3;
 		shell.setLayout(layout);

 		// create Menus
 		createMenus(shell);

 		/*
 		 * Create a sash form.
 		 */
 		SashForm form = new SashForm(shell, SWT.NONE);
 		form.setLayoutData(new GridData(GridData.FILL_BOTH));

 		/*
 		 * Create left panel with SWT Contents.
 		 */
 		createLeftPanel(form);

 		/*
 		 * Create right panel with TextArea which contains CSS to load.
 		 */
 		createRightPanel(form);
 		form.setWeights(new int[] { 30, 80 });

 		/*
 		 * Now we open the shell.
 		 */
 		shell.setSize(new Point(800, 600));
 		shell.open();
 		shell.setText("CSS Editors");
 		while (!shell.isDisposed()) {
 			if (!display.readAndDispatch())
 				display.sleep();
 		}
 		display.dispose();
 	}

 	/*--------------------  Menus  --------------------**/

 	/**
 	 * Create Menus File, Options
 	 *
 	 * @param shell
 	 */
 	protected void createMenus(Shell shell) {
 		Menu menu = new Menu(shell, SWT.BAR);
 		shell.setMenuBar(menu);
 		// Create File item Menu
 		createMenuItemFile(menu, shell);
 		// Create Options item Menu
 		// createMenuItemOptions(menu);
 	}

 	/**
 	 * Create Menu item File with sub menu New and Open
 	 *
 	 * @param menu
 	 * @param shell
 	 */
 	protected void createMenuItemFile(Menu menu, final Shell shell) {
 		MenuItem menuFileHeader = new MenuItem(menu, SWT.CASCADE);
 		menuFileHeader.setText("&File");
 		// File menu
 		Menu menuFile = new Menu(shell, SWT.DROP_DOWN);
 		menuFileHeader.setMenu(menuFile);
 		// New item menu
 		MenuItem itemNew = new MenuItem(menuFile, SWT.PUSH);
 		itemNew.setText("&New...");
 		itemNew.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				fillTextareaWithDefaultStyleSheetContent();
 			}
 		});
 		// Open item menu
 		MenuItem itemOpen = new MenuItem(menuFile, SWT.PUSH);
 		itemOpen.setText("&Open...");
 		itemOpen.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				FileDialog dialog = new FileDialog(shell, SWT.NULL);
 				dialog.setFilterExtensions(CSS_FILE_EXTENSION);
 				dialog.setText("Select CSS style file");
 				dialog.setFilterPath(getBaseStyleDir().getAbsolutePath());
 				String path = dialog.open();
 				if (path != null) {
 					File file = new File(path);
 					fillTextareaWithStyleSheetContent(file);
 				}
 			}
 		});

 	}

 	/**
 	 * Create Menu item Options
 	 *
 	 * @param menu
 	 */
 	protected void createMenuItemOptions(Menu menu) {
 		MenuItem menuOptionsHeader = new MenuItem(menu, SWT.CASCADE);
 		menuOptionsHeader.setText("&Options");
 		// Options menu
 		Menu menuOptions = new Menu(shell, SWT.DROP_DOWN);
 		menuOptionsHeader.setMenu(menuOptions);
 		// New item menu
 		MenuItem itemNew = new MenuItem(menuOptions, SWT.CHECK);
 		itemNew.setText("&Cache Resource...");

 	}

 	/*--------------------  Panel  --------------------**/

 	protected void createLeftPanel(Composite parent) {
 		leftPanel = new Composite(parent, SWT.NONE);
 		leftPanel.setLayout(new FillLayout());
 		createContent(leftPanel);
 	}

 	protected void createRightPanel(Composite parent) {

 		SashForm form = new SashForm(parent, SWT.NONE);
 		form.setLayoutData(new GridData(GridData.FILL_BOTH));

 		GridLayout layout = new GridLayout();
 		layout.marginWidth = 0;
 		layout.marginHeight = 0;
 		layout.verticalSpacing = 3;
 		Composite composite = new Composite(form, SWT.NONE);
 		composite.setLayout(layout);

 		statusLabel = new Label(composite, SWT.NONE);
 		statusLabel.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

 		// Create TextArea which contains CSS content.
 		textArea = new StyledText(composite, SWT.MULTI | SWT.V_SCROLL
 				| SWT.BORDER);
 		textArea.setLayoutData(new GridData(GridData.FILL_BOTH));
 		textArea.addModifyListener(new ModifyListener() {
 			public void modifyText(ModifyEvent e) {
 				if (applyStyleWhenTextAreaChangeCheckbox.getSelection())
 					applyStyles();
 			}
 		});

 		textArea.addKeyListener(new KeyAdapter() {
 			public void keyReleased(KeyEvent e) {
 				displaySelectedCSSProperty();
 			}
 		});
 		textArea.addMouseListener(new MouseAdapter() {
 			public void mouseDown(MouseEvent e) {
 				displaySelectedCSSProperty();
 			}
 		});

 		layout = new GridLayout();
 		layout.marginWidth = 0;
 		layout.marginHeight = 0;
 		layout.verticalSpacing = 3;
 		composite = new Composite(form, SWT.NONE);
 		composite.setLayout(layout);

 		Group group = new Group(composite, SWT.NONE);
 		group.setText("Selected CSS Property");
 		layout = new GridLayout(2, true);
 		layout.verticalSpacing = 3;
 		group.setLayout(layout);
 		group.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

 		Label label = new Label(group, SWT.NONE);
 		label.setText("CSS Property name");
 		selectedCSSPropertyNameText = new Text(group, SWT.BORDER
 				| SWT.READ_ONLY);
 		selectedCSSPropertyNameText.setLayoutData(new GridData(
 				GridData.FILL_HORIZONTAL));

 		label = new Label(group, SWT.NONE);
 		label.setText("CSS Property value");
 		selectedCSSPropertyValueText = new Text(group, SWT.BORDER);
 		selectedCSSPropertyValueText.setLayoutData(new GridData(
 				GridData.FILL_HORIZONTAL));
 		selectedCSSPropertyValueText.addKeyListener(new KeyAdapter() {
 			public void keyReleased(KeyEvent e) {

 				String property = selectedCSSPropertyNameText.getText();
 				property += ":";
 				property += selectedCSSPropertyValueText.getText();
 				updateSelectedCSSPropertyValue(property);
 			}
 		});

 		final Button b = new Button(group, SWT.PUSH | SWT.BORDER);
 		b.setText("Change Color");
 		b.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				ColorDialog colorDialog = new ColorDialog(shell);
 				colorDialog.setText("ColorDialog Demo");
 				String cssValue = selectedCSSPropertyValueText.getText();
 				if (cssValue != null && cssValue.length() > 0) {
 					try {
 						CSSValue value = engine.parsePropertyValue(cssValue);
 						RGB rgb = (RGB) engine.convert(value, RGB.class, null);
 						if (rgb != null)
 							colorDialog.setRGB(rgb);
 					} catch (Exception ex) {
 						handleExceptions(ex);
 					}
 					// engine.convert(, RGB.class,);
 				}
 				RGB newColor = colorDialog.open();
 				if (newColor != null) {
 					try {
 						cssValue = engine.convert(newColor, RGB.class,
 								selectedCSSPropertyNameText.getText());
 						if (cssValue == null)
 							return;
 						selectedCSSPropertyValueText.setText(cssValue);
 						String property = selectedCSSPropertyNameText.getText();
 						property += ":";
 						property += selectedCSSPropertyValueText.getText();
 						updateSelectedCSSPropertyValue(property);
 					} catch (Exception ex) {
 						handleExceptions(ex);
 					}
 				}
 			}
 		});

 		final Button b2 = new Button(group, SWT.PUSH | SWT.BORDER);
 		b2.setText("Change Font");
 		b2.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				FontDialog fontDialog = new FontDialog(shell);
 				fontDialog.setText("Choose the font");
 				String value = selectedCSSPropertyValueText.getText();
 				try {
 					String propertyName = selectedCSSPropertyNameText.getText();
 					CSSValue cssValue = engine.parsePropertyValue(value);
 					CSS2FontProperties fontProperties = CSS2FontPropertiesHelpers
 							.createCSS2FontProperties(cssValue, propertyName);
 					FontData fontData = (FontData) engine.convert(fontProperties,
 							FontData.class, display);
 					if (fontData != null) {
 						FontData[] fontDatas = { fontData };
 						fontDialog.setFontList(fontDatas);
 					}
 				} catch (Exception ex) {
 					handleExceptions(ex);
 				}
 				FontData newFontData = fontDialog.open();
 				if (newFontData != null) {
 					try {
 						String cssValue = engine.convert(newFontData,
 								FontData.class, selectedCSSPropertyNameText
 										.getText());
 						if (cssValue == null)
 							return;
 						selectedCSSPropertyValueText.setText(cssValue);
 						String property = selectedCSSPropertyNameText.getText();
 						property += ":";
 						property += selectedCSSPropertyValueText.getText();
 						updateSelectedCSSPropertyValue(property);
 					} catch (Exception ex) {
 						handleExceptions(ex);
 					}
 				}
 			}
 		});

 		group = new Group(composite, SWT.NONE);
 		group.setText("CSS Engine options");
 		layout = new GridLayout();
 		layout.verticalSpacing = 3;
 		group.setLayout(layout);
 		group.setLayoutData(new GridData(GridData.FILL_BOTH));

 		cacheResourcesCheckbox = new Button(group, SWT.CHECK);
 		cacheResourcesCheckbox.setText("Cache Color, Font and Cursor");
 		cacheResourcesCheckbox.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				if (!cacheResourcesCheckbox.getSelection()) {
 					engine.getResourcesRegistry().dispose();
 				}
 			}
 		});
 		cacheResourcesCheckbox.setSelection(true);

 		applyStyleWhenTextAreaChangeCheckbox = new Button(group, SWT.CHECK);
 		applyStyleWhenTextAreaChangeCheckbox
 				.setText("Apply style when textarea change");
 		applyStyleWhenTextAreaChangeCheckbox.setSelection(true);

 		htmlCheckbox = new Button(group, SWT.CHECK);
 		htmlCheckbox.setText("is HTML Selector? (otherwise it's SWT Selector)");
 		htmlCheckbox.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				populateCSSFiles();
 				applyStylesFromSelectedFile();
 			}
 		});

 		// Create CSS files list
 		cssFilesWidget = new List(group, SWT.NONE);
 		cssFilesWidget.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 		cssFilesWidget.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				applyStylesFromSelectedFile();
 			}
 		});
 		populateCSSFiles();

 		// Create Apply Style Button.
 		applyStyleToShellCheckbox = new Button(group, SWT.CHECK);
 		applyStyleToShellCheckbox.setText("Apply sytle to fully Shell?");
 		applyStyleToShellCheckbox.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				if (applyStyleToShellCheckbox.getSelection()) {
 					applyStyles();
 				} else {
 					// Apply styles with NONE style to reset
 					// styles applied into TextArea...
 					engine = getCSSEngine();
 					engine.applyStyles(shell, true);
 					// Apply styles
 					applyStyles();
 				}

 			}
 		});

 		Button applyStyleButton = new Button(group, SWT.BORDER);
 		applyStyleButton.setText("Apply style");
 		applyStyleButton.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				applyStyles();
 			}
 		});

 		form.setWeights(new int[] { 120, 90 });

 		// Select the first CSS style file
 		applyStylesFromSelectedFile();
 	}

 	public abstract void createContent(Composite parent);

 	protected void displaySelectedCSSProperty() {
 		selectedCSSPropertyNameText.setText("");
 		selectedCSSPropertyValueText.setText("");
 		int start = -1;
 		int end = -1;

 //		if (currentLine != -1)
 //			textArea.setLineBackground(currentLine, 1, null);

 		currentLine = textArea.getLineAtOffset(textArea.getCaretOffset());
 		if (currentLine + 1 >= textArea.getLineCount())
 			return;
 		start = textArea.getOffsetAtLine(currentLine);
 		end = textArea.getOffsetAtLine(currentLine + 1) - 2;
 		if (start <= end) {
 			String lineText = textArea.getText(start, end);
 			lineText = lineText.trim();
 			int index = lineText.indexOf(":");
 			if (index > 0) {
 				if (lineText.indexOf("{") != -1)
 					return;
 				String property = lineText.substring(0, index);
 				String value = lineText.substring(index + 1, lineText.length());
 				value = value.replaceAll(";", "");
 				// Remove comment
 				int commentIndex = value.indexOf("/*");
 				if (commentIndex > 0)
 					value = value.substring(0, commentIndex);
 				selectedCSSPropertyNameText.setText(property);
 				selectedCSSPropertyValueText.setText(value);

 //				textArea.setLineBackground(currentLine, 1, display
 //						.getSystemColor(SWT.COLOR_MAGENTA));
 			}
 		}
 	}

 	protected void updateSelectedCSSPropertyValue(String text) {
 		if (currentLine != -1 && currentLine + 1 >= textArea.getLineCount())
 			return;
 		int start = textArea.getOffsetAtLine(currentLine);
 		int end = textArea.getOffsetAtLine(currentLine + 1) - 2;

 		String startLineText = textArea.getText(0, start);
 		String endLineText = textArea.getText(end, textArea.getCharCount() - 1);
 		if (!text.endsWith(";") && !endLineText.startsWith(";"))
 			text += ";";
 		if (endLineText.startsWith(":"))
 			endLineText.substring(1, endLineText.length());
 		String newContent = startLineText + text + endLineText;
 		textArea.setText(newContent);
 	}

 	/*-------------------- AbstractCSSEditor methods implementation  --------------------**/

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.akrogen.tkui.core.css.examples.csseditors.AbstractCSSEditor#createCSSEngine()
 	 */
 	protected CSSEngine createCSSEngine() {
 		return new CSSSWTEngineImpl(shell.getDisplay());
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.akrogen.tkui.core.css.examples.csseditors.AbstractCSSEditor#getHTMLElementProvider()
 	 */
 	protected IElementProvider getHTMLElementProvider() {
 		return SWTHTMLElementProvider.INSTANCE;
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.akrogen.tkui.core.css.examples.csseditors.AbstractCSSEditor#getNativeWidgetElementProvider()
 	 */
 	protected IElementProvider getNativeWidgetElementProvider() {
 		return SWTElementProvider.INSTANCE;
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.akrogen.tkui.core.css.examples.csseditors.AbstractCSSEditor#isHTMLSelector()
 	 */
 	protected boolean isHTMLSelector() {
 		return htmlCheckbox.getSelection();
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.akrogen.tkui.core.css.examples.csseditors.AbstractCSSEditor#getStyleSheetContent()
 	 */
 	protected String getStyleSheetContent() {
 		return textArea.getText();
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.akrogen.tkui.core.css.examples.csseditors.AbstractCSSEditor#setStyleSheetContent(java.lang.String)
 	 */
 	protected void setStyleSheetContent(String content) {
 		textArea.setText(content);
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.akrogen.tkui.core.css.examples.csseditors.AbstractCSSEditor#setCSSEngineStatuts(java.lang.String)
 	 */
 	protected void setCSSEngineStatuts(String status) {
 		statusLabel.setText(status);
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.akrogen.tkui.core.css.examples.csseditors.AbstractCSSEditor#mustApplyStylesToWindow()
 	 */
 	protected boolean mustApplyStylesToWindow() {
 		return applyStyleToShellCheckbox.getSelection();
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.akrogen.tkui.core.css.examples.csseditors.AbstractCSSEditor#getLeftPanelNativeWidget()
 	 */
 	protected Object getLeftPanelNativeWidget() {
 		return leftPanel;
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.akrogen.tkui.core.css.examples.csseditors.AbstractCSSEditor#getWindowNativeWidget()
 	 */
 	protected Object getWindowNativeWidget() {
 		return shell;
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.akrogen.tkui.core.css.examples.csseditors.AbstractCSSEditor#getCSSNativeWidgetSerializerConfiguration()
 	 */
 	protected CSSSerializerConfiguration getCSSNativeWidgetSerializerConfiguration() {
 		return CSSSWTSerializerConfiguration.INSTANCE;
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.akrogen.tkui.core.css.examples.csseditors.AbstractCSSEditor#getCSSFileWidgetItemCount()
 	 */
 	protected int getCSSFilesWidgetItemCount() {
 		return cssFilesWidget.getItemCount();
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.akrogen.tkui.core.css.examples.csseditors.AbstractCSSEditor#getCSSFileWidgetSelectionIndex()
 	 */
 	protected int getCSSFilesWidgetSelectionIndex() {
 		return cssFilesWidget.getSelectionIndex();
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.akrogen.tkui.core.css.examples.csseditors.AbstractCSSEditor#selectCSSFileWidget(int)
 	 */
 	protected void selectCSSFilesWidget(int index) {
 		cssFilesWidget.select(index);
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.akrogen.tkui.core.css.examples.csseditors.AbstractCSSEditor#addCSSFilesWidget(java.lang.String)
 	 */
 	protected void addItemCSSFilesWidget(String item) {
 		cssFilesWidget.add(item);
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.akrogen.tkui.core.css.examples.csseditors.AbstractCSSEditor#removeAllCSSFilesWidget()
 	 */
 	protected void removeAllCSSFilesWidget() {
 		cssFilesWidget.removeAll();
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2008 Angelo Zerr 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:
	* Angelo Zerr <angelo.zerr@gmail.com> - initial API and implementation
	*******************************************************************************/
	package org.akrogen.tkui.css.swt.examples.csseditors;

	import java.io.File;
	import java.util.ArrayList;

	import org.akrogen.tkui.css.core.css2.CSS2FontPropertiesHelpers;
	import org.akrogen.tkui.css.core.dom.IElementProvider;
	import org.akrogen.tkui.css.core.dom.properties.css2.CSS2FontProperties;
	import org.akrogen.tkui.css.core.engine.CSSEngine;
	import org.akrogen.tkui.css.core.examples.csseditors.AbstractCSSEditor;
	import org.akrogen.tkui.css.core.serializers.CSSSerializerConfiguration;
	import org.akrogen.tkui.css.swt.dom.SWTElementProvider;
	import org.akrogen.tkui.css.swt.dom.html.SWTHTMLElementProvider;
	import org.akrogen.tkui.css.swt.engine.CSSSWTEngineImpl;
	import org.akrogen.tkui.css.swt.serializers.CSSSWTSerializerConfiguration;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.custom.SashForm;
	import org.eclipse.swt.custom.StyledText;
	import org.eclipse.swt.events.KeyAdapter;
	import org.eclipse.swt.events.KeyEvent;
	import org.eclipse.swt.events.ModifyEvent;
	import org.eclipse.swt.events.ModifyListener;
	import org.eclipse.swt.events.MouseAdapter;
	import org.eclipse.swt.events.MouseEvent;
	import org.eclipse.swt.events.SelectionAdapter;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.graphics.FontData;
	import org.eclipse.swt.graphics.Point;
	import org.eclipse.swt.graphics.RGB;
	import org.eclipse.swt.layout.FillLayout;
	import org.eclipse.swt.layout.GridData;
	import org.eclipse.swt.layout.GridLayout;
	import org.eclipse.swt.widgets.Button;
	import org.eclipse.swt.widgets.ColorDialog;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.swt.widgets.Display;
	import org.eclipse.swt.widgets.FileDialog;
	import org.eclipse.swt.widgets.FontDialog;
	import org.eclipse.swt.widgets.Group;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.List;
	import org.eclipse.swt.widgets.Menu;
	import org.eclipse.swt.widgets.MenuItem;
	import org.eclipse.swt.widgets.Shell;
	import org.eclipse.swt.widgets.Text;
	import org.w3c.dom.css.CSSValue;

	/**
	* Abstract CSS SWT Editor.
	*
	* @version 1.0.0
	* @author <a href="mailto:angelo.zerr@gmail.com">Angelo ZERR</a>
	*
	*/
	public abstract class AbstractCSSSWTEditor extends AbstractCSSEditor {

	protected static final String[] CSS_FILE_EXTENSION = { "*.css" };

	private Display display;

	/**
	* Textarea wich contains content of CSS style sheet.
	*/
	private StyledText textArea;

	private Button cacheResourcesCheckbox;

	/**
	* HTML checkbox to set if CSS must be typed with HTML syntaxe or SWT
	* syntax.
	*/
	private Button htmlCheckbox;

	/**
	* Label wich display time elapsed when CSS Engine apply styles.
	*/
	private Label statusLabel;

	/**
	* Apply style when text area change
	*/
	private Button applyStyleWhenTextAreaChangeCheckbox;

	/**
	* Launch Apply style
	*/
	private Button applyStyleToShellCheckbox;

	private Shell shell;

	private Composite leftPanel;

	private List cssFilesWidget;

	private java.util.List cssFiles = new ArrayList();

	private Text selectedCSSPropertyNameText = null;

	private Text selectedCSSPropertyValueText = null;

	protected int currentLine = -1;

	protected AbstractCSSSWTEditor(String nativeWidgetDir,
	String[] styleFileExtension) {
	super(nativeWidgetDir);
	}

	protected AbstractCSSSWTEditor() {
	super("swt");
	}

	public void display() {

	display = new Display();
	shell = new Shell(display, SWT.SHELL_TRIM);
	GridLayout layout = new GridLayout();
	layout.marginWidth = 0;
	layout.marginHeight = 0;
	layout.verticalSpacing = 3;
	shell.setLayout(layout);

	// create Menus
	createMenus(shell);

	/*
	* Create a sash form.
	*/
	SashForm form = new SashForm(shell, SWT.NONE);
	form.setLayoutData(new GridData(GridData.FILL_BOTH));

	/*
	* Create left panel with SWT Contents.
	*/
	createLeftPanel(form);

	/*
	* Create right panel with TextArea which contains CSS to load.
	*/
	createRightPanel(form);
	form.setWeights(new int[] { 30, 80 });

	/*
	* Now we open the shell.
	*/
	shell.setSize(new Point(800, 600));
	shell.open();
	shell.setText("CSS Editors");
	while (!shell.isDisposed()) {
	if (!display.readAndDispatch())
	display.sleep();
	}
	display.dispose();
	}

	/-------------------- Menus --------------------*/

	/**
	* Create Menus File, Options
	*
	* @param shell
	*/
	protected void createMenus(Shell shell) {
	Menu menu = new Menu(shell, SWT.BAR);
	shell.setMenuBar(menu);
	// Create File item Menu
	createMenuItemFile(menu, shell);
	// Create Options item Menu
	// createMenuItemOptions(menu);
	}

	/**
	* Create Menu item File with sub menu New and Open
	*
	* @param menu
	* @param shell
	*/
	protected void createMenuItemFile(Menu menu, final Shell shell) {
	MenuItem menuFileHeader = new MenuItem(menu, SWT.CASCADE);
	menuFileHeader.setText("&File");
	// File menu
	Menu menuFile = new Menu(shell, SWT.DROP_DOWN);
	menuFileHeader.setMenu(menuFile);
	// New item menu
	MenuItem itemNew = new MenuItem(menuFile, SWT.PUSH);
	itemNew.setText("&New...");
	itemNew.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	fillTextareaWithDefaultStyleSheetContent();
	}
	});
	// Open item menu
	MenuItem itemOpen = new MenuItem(menuFile, SWT.PUSH);
	itemOpen.setText("&Open...");
	itemOpen.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	FileDialog dialog = new FileDialog(shell, SWT.NULL);
	dialog.setFilterExtensions(CSS_FILE_EXTENSION);
	dialog.setText("Select CSS style file");
	dialog.setFilterPath(getBaseStyleDir().getAbsolutePath());
	String path = dialog.open();
	if (path != null) {
	File file = new File(path);
	fillTextareaWithStyleSheetContent(file);
	}
	}
	});

	}

	/**
	* Create Menu item Options
	*
	* @param menu
	*/
	protected void createMenuItemOptions(Menu menu) {
	MenuItem menuOptionsHeader = new MenuItem(menu, SWT.CASCADE);
	menuOptionsHeader.setText("&Options");
	// Options menu
	Menu menuOptions = new Menu(shell, SWT.DROP_DOWN);
	menuOptionsHeader.setMenu(menuOptions);
	// New item menu
	MenuItem itemNew = new MenuItem(menuOptions, SWT.CHECK);
	itemNew.setText("&Cache Resource...");

	}

	/-------------------- Panel --------------------*/

	protected void createLeftPanel(Composite parent) {
	leftPanel = new Composite(parent, SWT.NONE);
	leftPanel.setLayout(new FillLayout());
	createContent(leftPanel);
	}

	protected void createRightPanel(Composite parent) {

	SashForm form = new SashForm(parent, SWT.NONE);
	form.setLayoutData(new GridData(GridData.FILL_BOTH));

	GridLayout layout = new GridLayout();
	layout.marginWidth = 0;
	layout.marginHeight = 0;
	layout.verticalSpacing = 3;
	Composite composite = new Composite(form, SWT.NONE);
	composite.setLayout(layout);

	statusLabel = new Label(composite, SWT.NONE);
	statusLabel.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

	// Create TextArea which contains CSS content.
	textArea = new StyledText(composite, SWT.MULTI \| SWT.V_SCROLL
	\| SWT.BORDER);
	textArea.setLayoutData(new GridData(GridData.FILL_BOTH));
	textArea.addModifyListener(new ModifyListener() {
	public void modifyText(ModifyEvent e) {
	if (applyStyleWhenTextAreaChangeCheckbox.getSelection())
	applyStyles();
	}
	});

	textArea.addKeyListener(new KeyAdapter() {
	public void keyReleased(KeyEvent e) {
	displaySelectedCSSProperty();
	}
	});
	textArea.addMouseListener(new MouseAdapter() {
	public void mouseDown(MouseEvent e) {
	displaySelectedCSSProperty();
	}
	});

	layout = new GridLayout();
	layout.marginWidth = 0;
	layout.marginHeight = 0;
	layout.verticalSpacing = 3;
	composite = new Composite(form, SWT.NONE);
	composite.setLayout(layout);

	Group group = new Group(composite, SWT.NONE);
	group.setText("Selected CSS Property");
	layout = new GridLayout(2, true);
	layout.verticalSpacing = 3;
	group.setLayout(layout);
	group.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

	Label label = new Label(group, SWT.NONE);
	label.setText("CSS Property name");
	selectedCSSPropertyNameText = new Text(group, SWT.BORDER
	\| SWT.READ_ONLY);
	selectedCSSPropertyNameText.setLayoutData(new GridData(
	GridData.FILL_HORIZONTAL));

	label = new Label(group, SWT.NONE);
	label.setText("CSS Property value");
	selectedCSSPropertyValueText = new Text(group, SWT.BORDER);
	selectedCSSPropertyValueText.setLayoutData(new GridData(
	GridData.FILL_HORIZONTAL));
	selectedCSSPropertyValueText.addKeyListener(new KeyAdapter() {
	public void keyReleased(KeyEvent e) {

	String property = selectedCSSPropertyNameText.getText();
	property += ":";
	property += selectedCSSPropertyValueText.getText();
	updateSelectedCSSPropertyValue(property);
	}
	});

	final Button b = new Button(group, SWT.PUSH \| SWT.BORDER);
	b.setText("Change Color");
	b.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	ColorDialog colorDialog = new ColorDialog(shell);
	colorDialog.setText("ColorDialog Demo");
	String cssValue = selectedCSSPropertyValueText.getText();
	if (cssValue != null && cssValue.length() > 0) {
	try {
	CSSValue value = engine.parsePropertyValue(cssValue);
	RGB rgb = (RGB) engine.convert(value, RGB.class, null);
	if (rgb != null)
	colorDialog.setRGB(rgb);
	} catch (Exception ex) {
	handleExceptions(ex);
	}
	// engine.convert(, RGB.class,);
	}
	RGB newColor = colorDialog.open();
	if (newColor != null) {
	try {
	cssValue = engine.convert(newColor, RGB.class,
	selectedCSSPropertyNameText.getText());
	if (cssValue == null)
	return;
	selectedCSSPropertyValueText.setText(cssValue);
	String property = selectedCSSPropertyNameText.getText();
	property += ":";
	property += selectedCSSPropertyValueText.getText();
	updateSelectedCSSPropertyValue(property);
	} catch (Exception ex) {
	handleExceptions(ex);
	}
	}
	}
	});

	final Button b2 = new Button(group, SWT.PUSH \| SWT.BORDER);
	b2.setText("Change Font");
	b2.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	FontDialog fontDialog = new FontDialog(shell);
	fontDialog.setText("Choose the font");
	String value = selectedCSSPropertyValueText.getText();
	try {
	String propertyName = selectedCSSPropertyNameText.getText();
	CSSValue cssValue = engine.parsePropertyValue(value);
	CSS2FontProperties fontProperties = CSS2FontPropertiesHelpers
	.createCSS2FontProperties(cssValue, propertyName);
	FontData fontData = (FontData) engine.convert(fontProperties,
	FontData.class, display);
	if (fontData != null) {
	FontData[] fontDatas = { fontData };
	fontDialog.setFontList(fontDatas);
	}
	} catch (Exception ex) {
	handleExceptions(ex);
	}
	FontData newFontData = fontDialog.open();
	if (newFontData != null) {
	try {
	String cssValue = engine.convert(newFontData,
	FontData.class, selectedCSSPropertyNameText
	.getText());
	if (cssValue == null)
	return;
	selectedCSSPropertyValueText.setText(cssValue);
	String property = selectedCSSPropertyNameText.getText();
	property += ":";
	property += selectedCSSPropertyValueText.getText();
	updateSelectedCSSPropertyValue(property);
	} catch (Exception ex) {
	handleExceptions(ex);
	}
	}
	}
	});

	group = new Group(composite, SWT.NONE);
	group.setText("CSS Engine options");
	layout = new GridLayout();
	layout.verticalSpacing = 3;
	group.setLayout(layout);
	group.setLayoutData(new GridData(GridData.FILL_BOTH));

	cacheResourcesCheckbox = new Button(group, SWT.CHECK);
	cacheResourcesCheckbox.setText("Cache Color, Font and Cursor");
	cacheResourcesCheckbox.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	if (!cacheResourcesCheckbox.getSelection()) {
	engine.getResourcesRegistry().dispose();
	}
	}
	});
	cacheResourcesCheckbox.setSelection(true);

	applyStyleWhenTextAreaChangeCheckbox = new Button(group, SWT.CHECK);
	applyStyleWhenTextAreaChangeCheckbox
	.setText("Apply style when textarea change");
	applyStyleWhenTextAreaChangeCheckbox.setSelection(true);

	htmlCheckbox = new Button(group, SWT.CHECK);
	htmlCheckbox.setText("is HTML Selector? (otherwise it's SWT Selector)");
	htmlCheckbox.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	populateCSSFiles();
	applyStylesFromSelectedFile();
	}
	});

	// Create CSS files list
	cssFilesWidget = new List(group, SWT.NONE);
	cssFilesWidget.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
	cssFilesWidget.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	applyStylesFromSelectedFile();
	}
	});
	populateCSSFiles();

	// Create Apply Style Button.
	applyStyleToShellCheckbox = new Button(group, SWT.CHECK);
	applyStyleToShellCheckbox.setText("Apply sytle to fully Shell?");
	applyStyleToShellCheckbox.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	if (applyStyleToShellCheckbox.getSelection()) {
	applyStyles();
	} else {
	// Apply styles with NONE style to reset
	// styles applied into TextArea...
	engine = getCSSEngine();
	engine.applyStyles(shell, true);
	// Apply styles
	applyStyles();
	}

	}
	});

	Button applyStyleButton = new Button(group, SWT.BORDER);
	applyStyleButton.setText("Apply style");
	applyStyleButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	applyStyles();
	}
	});

	form.setWeights(new int[] { 120, 90 });

	// Select the first CSS style file
	applyStylesFromSelectedFile();
	}

	public abstract void createContent(Composite parent);

	protected void displaySelectedCSSProperty() {
	selectedCSSPropertyNameText.setText("");
	selectedCSSPropertyValueText.setText("");
	int start = -1;
	int end = -1;

	// if (currentLine != -1)
	// textArea.setLineBackground(currentLine, 1, null);

	currentLine = textArea.getLineAtOffset(textArea.getCaretOffset());
	if (currentLine + 1 >= textArea.getLineCount())
	return;
	start = textArea.getOffsetAtLine(currentLine);
	end = textArea.getOffsetAtLine(currentLine + 1) - 2;
	if (start <= end) {
	String lineText = textArea.getText(start, end);
	lineText = lineText.trim();
	int index = lineText.indexOf(":");
	if (index > 0) {
	if (lineText.indexOf("{") != -1)
	return;
	String property = lineText.substring(0, index);
	String value = lineText.substring(index + 1, lineText.length());
	value = value.replaceAll(";", "");
	// Remove comment
	int commentIndex = value.indexOf("/*");
	if (commentIndex > 0)
	value = value.substring(0, commentIndex);
	selectedCSSPropertyNameText.setText(property);
	selectedCSSPropertyValueText.setText(value);

	// textArea.setLineBackground(currentLine, 1, display
	// .getSystemColor(SWT.COLOR_MAGENTA));
	}
	}
	}

	protected void updateSelectedCSSPropertyValue(String text) {
	if (currentLine != -1 && currentLine + 1 >= textArea.getLineCount())
	return;
	int start = textArea.getOffsetAtLine(currentLine);
	int end = textArea.getOffsetAtLine(currentLine + 1) - 2;

	String startLineText = textArea.getText(0, start);
	String endLineText = textArea.getText(end, textArea.getCharCount() - 1);
	if (!text.endsWith(";") && !endLineText.startsWith(";"))
	text += ";";
	if (endLineText.startsWith(":"))
	endLineText.substring(1, endLineText.length());
	String newContent = startLineText + text + endLineText;
	textArea.setText(newContent);
	}

	/-------------------- AbstractCSSEditor methods implementation --------------------*/

	/*
	* (non-Javadoc)
	*
	* @see org.akrogen.tkui.core.css.examples.csseditors.AbstractCSSEditor#createCSSEngine()
	*/
	protected CSSEngine createCSSEngine() {
	return new CSSSWTEngineImpl(shell.getDisplay());
	}

	/*
	* (non-Javadoc)
	*
	* @see org.akrogen.tkui.core.css.examples.csseditors.AbstractCSSEditor#getHTMLElementProvider()
	*/
	protected IElementProvider getHTMLElementProvider() {
	return SWTHTMLElementProvider.INSTANCE;
	}

	/*
	* (non-Javadoc)
	*
	* @see org.akrogen.tkui.core.css.examples.csseditors.AbstractCSSEditor#getNativeWidgetElementProvider()
	*/
	protected IElementProvider getNativeWidgetElementProvider() {
	return SWTElementProvider.INSTANCE;
	}

	/*
	* (non-Javadoc)
	*
	* @see org.akrogen.tkui.core.css.examples.csseditors.AbstractCSSEditor#isHTMLSelector()
	*/
	protected boolean isHTMLSelector() {
	return htmlCheckbox.getSelection();
	}

	/*
	* (non-Javadoc)
	*
	* @see org.akrogen.tkui.core.css.examples.csseditors.AbstractCSSEditor#getStyleSheetContent()
	*/
	protected String getStyleSheetContent() {
	return textArea.getText();
	}

	/*
	* (non-Javadoc)
	*
	* @see org.akrogen.tkui.core.css.examples.csseditors.AbstractCSSEditor#setStyleSheetContent(java.lang.String)
	*/
	protected void setStyleSheetContent(String content) {
	textArea.setText(content);
	}

	/*
	* (non-Javadoc)
	*
	* @see org.akrogen.tkui.core.css.examples.csseditors.AbstractCSSEditor#setCSSEngineStatuts(java.lang.String)
	*/
	protected void setCSSEngineStatuts(String status) {
	statusLabel.setText(status);
	}

	/*
	* (non-Javadoc)
	*
	* @see org.akrogen.tkui.core.css.examples.csseditors.AbstractCSSEditor#mustApplyStylesToWindow()
	*/
	protected boolean mustApplyStylesToWindow() {
	return applyStyleToShellCheckbox.getSelection();
	}

	/*
	* (non-Javadoc)
	*
	* @see org.akrogen.tkui.core.css.examples.csseditors.AbstractCSSEditor#getLeftPanelNativeWidget()
	*/
	protected Object getLeftPanelNativeWidget() {
	return leftPanel;
	}

	/*
	* (non-Javadoc)
	*
	* @see org.akrogen.tkui.core.css.examples.csseditors.AbstractCSSEditor#getWindowNativeWidget()
	*/
	protected Object getWindowNativeWidget() {
	return shell;
	}

	/*
	* (non-Javadoc)
	*
	* @see org.akrogen.tkui.core.css.examples.csseditors.AbstractCSSEditor#getCSSNativeWidgetSerializerConfiguration()
	*/
	protected CSSSerializerConfiguration getCSSNativeWidgetSerializerConfiguration() {
	return CSSSWTSerializerConfiguration.INSTANCE;
	}

	/*
	* (non-Javadoc)
	*
	* @see org.akrogen.tkui.core.css.examples.csseditors.AbstractCSSEditor#getCSSFileWidgetItemCount()
	*/
	protected int getCSSFilesWidgetItemCount() {
	return cssFilesWidget.getItemCount();
	}

	/*
	* (non-Javadoc)
	*
	* @see org.akrogen.tkui.core.css.examples.csseditors.AbstractCSSEditor#getCSSFileWidgetSelectionIndex()
	*/
	protected int getCSSFilesWidgetSelectionIndex() {
	return cssFilesWidget.getSelectionIndex();
	}

	/*
	* (non-Javadoc)
	*
	* @see org.akrogen.tkui.core.css.examples.csseditors.AbstractCSSEditor#selectCSSFileWidget(int)
	*/
	protected void selectCSSFilesWidget(int index) {
	cssFilesWidget.select(index);
	}

	/*
	* (non-Javadoc)
	*
	* @see org.akrogen.tkui.core.css.examples.csseditors.AbstractCSSEditor#addCSSFilesWidget(java.lang.String)
	*/
	protected void addItemCSSFilesWidget(String item) {
	cssFilesWidget.add(item);
	}

	/*
	* (non-Javadoc)
	*
	* @see org.akrogen.tkui.core.css.examples.csseditors.AbstractCSSEditor#removeAllCSSFilesWidget()
	*/
	protected void removeAllCSSFilesWidget() {
	cssFilesWidget.removeAll();
	}
	}