Java tutorial
/******************************************************************************* * Copyright (c) 2004, 2005 Sybase, Inc. 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: * Sybase, Inc. - initial API and implementation *******************************************************************************/ package org.eclipse.jst.jsf.facesconfig.ui.pageflow.figure; import java.util.Vector; import org.eclipse.draw2d.ChopboxAnchor; import org.eclipse.draw2d.ConnectionAnchor; import org.eclipse.draw2d.Figure; import org.eclipse.draw2d.FlowLayout; import org.eclipse.draw2d.Label; import org.eclipse.draw2d.LabelAnchor; import org.eclipse.draw2d.MarginBorder; import org.eclipse.draw2d.PositionConstants; import org.eclipse.draw2d.geometry.Point; import org.eclipse.draw2d.geometry.Rectangle; import org.eclipse.jface.preference.IPreferenceStore; import org.eclipse.jface.preference.PreferenceConverter; import org.eclipse.jface.resource.FontRegistry; import org.eclipse.jface.resource.JFaceResources; import org.eclipse.jst.jsf.facesconfig.ui.EditorPlugin; import org.eclipse.jst.jsf.facesconfig.ui.preference.GEMPreferences; import org.eclipse.swt.graphics.Color; import org.eclipse.swt.graphics.Font; import org.eclipse.swt.graphics.FontData; import org.eclipse.swt.graphics.Image; /** * The figure for pageflow node, used by pageflow node edit part. * */ public class PageflowNodeFigure extends Figure { /** Same connection anchors for source and target */ protected Vector connectionAnchors = new Vector(1); /** label of the pageflow node figure */ private NodeLabel label; /** the foreground color of Label */ private Color labelFgColor; /** the background color of Label */ // private Color labelBgColor; // TODO: variable is never read because getter is private /** the text placement for the label */ private int textPlacement = PositionConstants.SOUTH; /** * Default constructor */ public PageflowNodeFigure() { setLayoutManager(new FlowLayout()); // initializeConnectionAnchors(); } /** * get the source(output) anchor according to the input point. * * @param p - * the input point * @return - Source ConnectionAnchor */ public ConnectionAnchor getSourceConnectionAnchorAt(Point p) { if (getSourceConnectionAnchors().size() == 0) return null; return (ConnectionAnchor) getSourceConnectionAnchors().get(0); } /** * get the default source anchor * * @return - Source ConnectionAnchor */ public ConnectionAnchor getSourceConnectionAnchor() { if (getSourceConnectionAnchors().size() == 0) return null; return (ConnectionAnchor) getSourceConnectionAnchors().get(0); } /** * Get the source connection anchors vector * * @return - the vector */ private Vector getSourceConnectionAnchors() { return connectionAnchors; } /** * get the target (input) connection Anchor according the input point * * @param p - * the input Point * @return - ConnectionAnchor */ public ConnectionAnchor getTargetConnectionAnchorAt(Point p) { if (getTargetConnectionAnchors().size() == 0) return null; return (ConnectionAnchor) getTargetConnectionAnchors().get(0); } /** * get the default target (input) connection Anchor * * @return - ConnectionAnchor */ public ConnectionAnchor getTargetConnectionAnchor() { if (getTargetConnectionAnchors().size() == 0) return null; return (ConnectionAnchor) getTargetConnectionAnchors().get(0); } /** * Get the target connection anchors vector * * @return - the vector */ private Vector getTargetConnectionAnchors() { return connectionAnchors; } /** * update the anchors * */ public void update() { initializeConnectionAnchors(); } /** * Initialize the connection anchors * */ private void initializeConnectionAnchors() { connectionAnchors.removeAllElements(); ChopboxAnchor inputConnectionAnchor = new LabelAnchor(label); connectionAnchors.addElement(inputConnectionAnchor); } /** * get the text placement from preference. * */ private int getTextPlacement() { IPreferenceStore store = EditorPlugin.getDefault().getPreferenceStore(); String s = store.getString(GEMPreferences.LABEL_PLACEMENT); if (GEMPreferences.LABEL_PLACEMENT_TOP.equals(s)) textPlacement = PositionConstants.NORTH; else if (GEMPreferences.LABEL_PLACEMENT_BOTTOM.equals(s)) textPlacement = PositionConstants.SOUTH; else if (GEMPreferences.LABEL_PLACEMENT_LEFT.equals(s)) textPlacement = PositionConstants.WEST; else if (GEMPreferences.LABEL_PLACEMENT_RIGHT.equals(s)) textPlacement = PositionConstants.EAST; return textPlacement; } /** * get the label's background color from preference. * * @return */ // TODO: dead code // private Color getLabelBackgroundColor() { // return labelBgColor; // } /** * get the label's foreground color from preference. * * @return */ private Color getLabelForegroundColor() { if (labelFgColor == null) { IPreferenceStore store = EditorPlugin.getDefault().getPreferenceStore(); labelFgColor = GEMPreferences.getColor(store, GEMPreferences.FIGURE_LABEL_FONT_COLOR); } return labelFgColor; } /** * get the labe's font from preference. * * @return */ private Font getLabelFont() { FontRegistry registry = JFaceResources.getFontRegistry(); IPreferenceStore store = EditorPlugin.getDefault().getPreferenceStore(); FontData fontData = PreferenceConverter.getFontData(store, GEMPreferences.FIGURE_LABEL_FONT); if (!registry.get(fontData.toString()).equals(registry.defaultFont())) return registry.get(fontData.toString()); registry.put(fontData.toString(), new FontData[] { fontData }); return registry.get(fontData.toString()); } /** * set the image and text of the figure * * @param image - * the image * @param str - * the label */ public void setImageText(Image image, String str) { if (image == null) setText(str); else if (str == null) setImage(image); else { if (label == null) { label = new NodeLabel(str, image); label.setTextPlacement(getTextPlacement()); label.setForegroundColor(getLabelForegroundColor()); label.setFont(getLabelFont()); add(label); initializeConnectionAnchors(); } else { label.setIcon(image); label.setText(str); } } } /** * set the image of the figure * * @param image - * the image */ public void setImage(Image image) { if (image == null) return; if (label == null) { label = new NodeLabel(image); label.setTextPlacement(getTextPlacement()); label.setForegroundColor(getLabelForegroundColor()); label.setFont(getLabelFont()); add(label); initializeConnectionAnchors(); } else label.setIcon(image); } /** * set the text of the figure * * @param str - * the text */ public void setText(String str) { if (str == null) return; if (label == null) { label = new NodeLabel(str); label.setTextPlacement(getTextPlacement()); label.setForegroundColor(getLabelForegroundColor()); label.setFont(getLabelFont()); add(label); initializeConnectionAnchors(); } else label.setText(str); } /* * (non-Javadoc) * * @see org.eclipse.draw2d.Figure#useLocalCoordinates() */ protected boolean useLocalCoordinates() { return true; } /** * Returns the imageBounds. * * @return - Rectangle of image */ public Rectangle getImageBounds() { return label.getIconBounds(); } /** * Returns the textBounds. * * @return - Rectangle of text field */ public Rectangle getTextBounds() { return label.getTextBounds(); } /** * Returns the label. * * @return - Label */ public Label getLabel() { return label; } /** * set the label's backaground */ public void setBackgroundColor(Color bg) { // TODO: var is never read: labelBgColor = bg; if (label != null) label.setBackgroundColor(bg); } /** * set the label's foreground */ public void setForegroundColor(Color fg) { labelFgColor = fg; if (label != null) label.setForegroundColor(fg); } /** * Set the label's font */ public void setFont(Font f) { if (label != null) label.setFont(f); super.setFont(f); } /** * Set the text placement for the label * * @param where */ public void setTextPlacement(int where) { textPlacement = where; if (label != null) label.setTextPlacement(where); } /** * @param text */ public void setToolTipText(String text) { Label toolTipLabel = null; if (text != null && text.length() > 0) { toolTipLabel = new Label(text); toolTipLabel.setBorder(new MarginBorder(3)); } super.setToolTip(toolTipLabel); } /** * @return the figure's tool tip text or null if none */ public String getToolTipText() { if (getToolTip() != null) return ((Label) getToolTip()).getText(); return null; } }