/* uDig - User Friendly Desktop Internet GIS client
* http://udig.refractions.net
* (C) 2004, Refractions Research Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*/
package org.geotools.swt.styling.simple;
import java.awt.Color;
import java.text.MessageFormat;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.KeyListener;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Combo;
import org.eclipse.swt.widgets.Composite;
import org.geotools.styling.Fill;
import org.geotools.styling.Graphic;
import org.geotools.styling.Mark;
import org.geotools.styling.SLD;
import org.geotools.styling.Stroke;
import org.geotools.styling.StyleBuilder;
import org.geotools.swt.utils.Messages;
import org.opengis.style.GraphicalSymbol;
/**
* Allows editing/viewing of a Style Layer Descriptor "Graphic".
* <p>
* Here is the pretty picture: <pre><code>
* +-+ +-------+ +------+
* Point: |x| | star\/| |size\/|
* +-+ +-------+ +------+
* </code></pre>
* </p>
* <p>
* Workflow:
* <ol>
* <li>createControl( parent ) - set up controls
* <li>setGraphic( graphic, mode ) - provide content from SimpleStyleConfigurator
* <ol>
* <li> Symbolizer values copied into fields based on mode
* <li> fields copied into controls
* <li> controls enabled based on mode & fields
* </ol>
* <li>Listener.widgetSelected/modifyText - User performs an "edit"
* <li>Listener.sync( SelectionEvent ) - update fields with values of controls
* <li>fire( SelectionSevent ) - notify SimpleStyleConfigurator of change
* <li>getGraphic( Fill, Stroke, StyleBuilder ) - construct a Graphic based on fields
* </ul>
* </p>
* @author Jody Garnett
* @since 1.0.0
*
*
* @source $URL: http://svn.osgeo.org/geotools/trunk/modules/unsupported/swt/src/main/java/org/geotools/swt/styling/simple/GraphicViewer.java $
*/
public class GraphicViewer {
boolean enabled;
String type;
double width;
Button on;
Combo name;
Combo size;
private class Listener implements SelectionListener, ModifyListener {
public void widgetSelected( SelectionEvent e ) {
sync(e);
};
public void widgetDefaultSelected( SelectionEvent e ) {
sync(e);
};
public void modifyText( final ModifyEvent e ) {
sync(AbstractSimpleConfigurator.selectionEvent(e));
};
private void sync( SelectionEvent selectionEvent ) {
try {
GraphicViewer.this.enabled = GraphicViewer.this.on.getSelection();
GraphicViewer.this.type = GraphicViewer.this.name.getText();
try {
GraphicViewer.this.width = Integer.parseInt(GraphicViewer.this.size.getText());
} catch (NumberFormatException nan) {
// well lets just leave width alone
}
fire(selectionEvent); // everything worked
} catch (Throwable t) {
// meh
} finally {
GraphicViewer.this.name.setEnabled(GraphicViewer.this.enabled);
GraphicViewer.this.size.setEnabled(GraphicViewer.this.enabled);
}
}
};
Listener sync = new Listener();
private SelectionListener listener;
/**
* Accepts a listener that will be notified when content changes.
* @param listener1
*/
public void addListener( SelectionListener listener1 ) {
this.listener = listener1;
}
/**
* Remove listener.
* @param listener1
*/
public void removeListener( SelectionListener listener1 ) {
if (this.listener == listener1)
this.listener = null;
}
/**
* TODO summary sentence for fire ...
*
* @param event
*/
protected void fire( SelectionEvent event ) {
if (this.listener == null)
return;
this.listener.widgetSelected(event);
}
/**
* TODO summary sentence for createControl ...
*
* @param parent
* @param klisten
* @param build
* @return Generated composite
*/
public Composite createControl( Composite parent, KeyListener klisten, StyleBuilder build ) {
Composite part = AbstractSimpleConfigurator.subpart(parent, Messages.getString("SimpleStyleConfigurator_point_label"));
this.on = new Button(part, SWT.CHECK);
// this.on.addSelectionListener( this.sync );
this.size = new Combo(part, SWT.DROP_DOWN);
this.size.setItems(new String[]{"1", "2", "3", "5", "10", "15"}); //$NON-NLS-1$//$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ //$NON-NLS-5$ //$NON-NLS-6$
this.size.setTextLimit(2);
this.size.addKeyListener(klisten);
this.size.setToolTipText(Messages.getString("GraphicViewer_size_tooltip"));
this.name = new Combo(part, SWT.DROP_DOWN);
this.name.setItems(build.getWellKnownMarkNames());
this.name.setTextLimit(9);
this.name.addKeyListener(klisten);
this.name.setToolTipText(Messages.getString("GraphicViewer_name_tooltip"));
return part;
}
/**
* TODO summary sentence for getGraphic ...
*
* @param filll
* @param stroke
* @param build
* @return Graphic defined by this model
*/
public Graphic getGraphic( Fill filll, Stroke stroke, StyleBuilder build ) {
if (!this.enabled) {
Mark mark = null;
if (this.type == null) {
build.createMark("square", null, null); //$NON-NLS-1$
} else {
mark = build.createMark(this.type, (Fill) null, (Stroke) null);
}
return build.createGraphic(null, mark, null);
}
Mark mark = build.createMark(this.type, filll, stroke);
Graphic graphic = build.createGraphic(null, mark, null);
graphic.setSize(build.literalExpression(this.width));
return graphic;
}
/**
* TODO summary sentence for setGraphic ...
*
* @param graphic
* @param mode
* @param enabled
*/
public void setGraphic( Graphic graphic, Mode mode, Color defaultColor ) {
boolean enabled = true;
if (graphic == null) {
StyleBuilder builder = new StyleBuilder();
graphic = builder.createGraphic(null, builder.createMark(StyleBuilder.MARK_SQUARE, defaultColor), null);
enabled = true;
}
this.width = SLDs.size(graphic);
String text = MessageFormat.format("{0,number,#0}", this.width); //$NON-NLS-1$
if (text != null) {
this.size.setText(text);
this.size.select(this.size.indexOf(text));
}
boolean marked = false;
if (graphic != null && graphic.graphicalSymbols() != null && !graphic.graphicalSymbols().isEmpty()) {
for( GraphicalSymbol symbol : graphic.graphicalSymbols() ) {
if (symbol instanceof Mark) {
Mark mark = (Mark) symbol;
setMark(mark, mode);
marked = true;
break;
}
}
}
if (!marked) {
setMark(null, mode);
}
this.enabled = this.enabled && enabled;
}
private void setMark( Mark mark, Mode mode ) {
listen(false);
try {
this.enabled = (mode == Mode.POINT && mark != null);
this.type = SLD.wellKnownName(mark);
// Stroke is used in line, point and polygon
this.on.setEnabled(mode == Mode.POINT || mode == Mode.ALL);
if (this.type != null) {
this.name.setText(this.type);
this.name.select(this.name.indexOf(this.type));
}
this.on.setSelection(this.enabled);
this.size.setEnabled(this.enabled);
this.name.setEnabled(this.enabled);
} finally {
listen(true); // listen to user now
}
}
void listen( boolean listen ) {
if (listen) {
this.on.addSelectionListener(this.sync);
this.size.addSelectionListener(this.sync);
this.size.addModifyListener(this.sync);
this.name.addSelectionListener(this.sync);
this.name.addModifyListener(this.sync);
} else {
this.on.removeSelectionListener(this.sync);
this.size.removeSelectionListener(this.sync);
this.size.removeModifyListener(this.sync);
this.name.removeSelectionListener(this.sync);
this.name.removeModifyListener(this.sync);
}
}
}