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A GWT library to access the SVG functionalities of web browsers
/**********************************************
* Copyright (C) 2010 Lukas Laag
* This file is part of lib-gwt-svg.
*
* libgwtsvg 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, either version 3 of the License, or
* (at your option) any later version.
*
* libgwtsvg 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.
*
* You should have received a copy of the GNU Lesser General Public License
* along with libgwtsvg. If not, see http://www.gnu.org/licenses/
**********************************************/
package org.vectomatic.dom.svg.ui;
import java.util.Map;
import org.vectomatic.dom.svg.OMSVGSVGElement;
import org.vectomatic.dom.svg.ui.SVGButtonBase.SVGFaceName;
import org.vectomatic.dom.svg.utils.DOMHelper;
import com.google.gwt.dom.client.Element;
import com.google.gwt.dom.client.EventTarget;
import com.google.gwt.dom.client.NativeEvent;
import com.google.gwt.event.dom.client.LoseCaptureEvent;
import com.google.gwt.event.dom.client.LoseCaptureHandler;
import com.google.gwt.event.dom.client.MouseDownEvent;
import com.google.gwt.event.dom.client.MouseEvent;
import com.google.gwt.event.dom.client.MouseOutEvent;
import com.google.gwt.event.dom.client.MouseOverEvent;
import com.google.gwt.event.dom.client.MouseUpEvent;
import com.google.gwt.uibinder.client.ElementParserToUse;
import com.google.gwt.user.client.Timer;
/**
* SVG push button class.
* An SVG push button typically defines at least the following two faces:
*
* - UP
* - DOWN_HOVERING
*
* You can define an SVG push button using UiBinder templates. Use
* the svgui:upFace, svgui:upDisabledFace, svgui:upHoveringFace
* svgui:downFace, svgui:downDisabledFace, svgui:downHoveringFace
* tags to defined faces.
* Depending on your needs, you can either define the SVG inline with
* the svgui:element tag. This can be convenient if you want to
* localize the button label, or use styles defined in the template.
* Or you can use an {@link org.vectomatic.dom.svg.ui.SVGResource SVGResource} with the resource attribute,
* if your SVG is large or if you want to keep your template more readable.
* Each face contains one or more svgui:styleChange tags.
* The classNames attribute specifies the name of the
* CSS class selectors to be applied to the SVG element when the face
* is activated.
* The following section shows a sample UiBinder template:
*
* <svgui:SVGPushButton ui:field="clickMeButton">
* <svgui:element>
* <svg viewBox="0 0 200 60" width="200" height="60" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
* <rect class="btn-shape" x="3" y="3" width="194" height="54" rx="10" ry="10" />
* <text class="btn-text" x="16" y="43">Click me !</text>
* </svg>
* </svgui:element>
* <svgui:upFace><svgui:styleChange classNames="{style.btn1} {style.btn1-up}"/></svgui:upFace>
* <svgui:downHoveringFace><svgui:styleChange classNames="{style.btn1} {style.btn1-down-hovering}"/></svgui:downHoveringFace>
* </svgui:SVGPushButton>
*
* Note that by default the inline SVG in SVGPushButtons is validated against the SVG 1.1 XSD schema.
* You can opt out of validation by setting the validated="false"
* attribute on the svgui:element tag.
* @author laaglu
*/
@ElementParserToUse(className = "org.vectomatic.dev.svg.impl.gen.SVGButtonBaseParser")
public class SVGPushButton extends SVGButtonBase {
private int repeatDelayMillis;
private CustomerTimer timer;
private class CustomerTimer extends Timer {
private EventClone mouseDownEvent;
public CustomerTimer(EventClone mouseDownEvent) {
this.mouseDownEvent = mouseDownEvent;
}
@Override
public void run() {
mouseDownEvent.fireEvent(svgElement.getElement());
}
}
private static class EventClone {
private String type;
private int canBubbleArg;
private int cancelableArg;
private int screenX;
private int screenY;
private int clientX;
private int clientY;
private boolean ctrlKey;
private boolean altKey;
private boolean shiftKey;
private boolean metaKey;
private int button;
private EventTarget relatedEventTarget;
public EventClone(MouseEvent mouseEvent) {
NativeEvent evt = mouseEvent.getNativeEvent();
type = evt.getType();
screenX = evt.getScreenX();
screenY = evt.getScreenY();
clientX = evt.getClientX();
clientY = evt.getClientY();
ctrlKey = evt.getCtrlKey();
altKey = evt.getAltKey();
shiftKey = evt.getShiftKey();
metaKey = evt.getMetaKey();
button = evt.getButton();
relatedEventTarget = evt.getRelatedEventTarget();
}
public final native void fireEvent(Element element) /*-{
var evt = element.ownerDocument.createEvent("MouseEvents");
evt.initMouseEvent(
[email protected]::type,
true,
true,
$wnd,
0,
[email protected]::screenX,
[email protected]::screenY,
[email protected]::clientX,
[email protected]::clientY,
[email protected]::ctrlKey,
[email protected]::altKey,
[email protected]::shiftKey,
[email protected]::metaKey,
[email protected]::button,
[email protected]::relatedEventTarget);
element.dispatchEvent(evt);
}-*/;
}
public SVGPushButton() {
}
public SVGPushButton(OMSVGSVGElement svgElement, Map faces) {
super(svgElement, faces);
showFace(SVGFaceName.UP);
}
public SVGPushButton(SVGResource resource, Map faces) {
this(resource.getSvg(), faces);
}
@Override
public void setEnabled(boolean enabled) {
if (enabled != isEnabled()) {
if (enabled) {
showFace(SVGFaceName.UP);
} else {
cancelTimer();
showFace(SVGFaceName.UP_DISABLED);
}
}
}
public void onMouseDown(MouseDownEvent event) {
// GWT.log("onMouseDown");
if (isEnabled()) {
DOMHelper.setCaptureElement(svgElement, new LoseCaptureHandler() {
@Override
public void onLoseCapture(LoseCaptureEvent event) {
cancelTimer();
}
});
if (repeatDelayMillis > 0 && timer == null) {
timer = new CustomerTimer(new EventClone(event));
timer.scheduleRepeating(repeatDelayMillis);
}
showFace(SVGFaceName.DOWN_HOVERING);
}
event.stopPropagation();
event.preventDefault();
}
public void onMouseUp(MouseUpEvent event) {
// GWT.log("onMouseUp");
cancelTimer();
DOMHelper.releaseCaptureElement();
if (isEnabled()) {
switch(currentFaceName) {
case DOWN:
showFace(SVGFaceName.UP);
break;
case DOWN_HOVERING:
showFace(SVGFaceName.UP_HOVERING);
break;
}
}
event.stopPropagation();
event.preventDefault();
}
public void onMouseOver(MouseOverEvent event) {
// GWT.log("onMouseOver");
if (isEnabled()) {
switch(currentFaceName) {
case UP:
showFace(SVGFaceName.UP_HOVERING);
break;
case DOWN:
showFace(SVGFaceName.DOWN_HOVERING);
break;
}
}
event.stopPropagation();
event.preventDefault();
}
public void onMouseOut(MouseOutEvent event) {
// GWT.log("onMouseOut");
if (isEnabled()) {
switch(currentFaceName) {
case UP_HOVERING:
showFace(SVGFaceName.UP);
break;
case DOWN_HOVERING:
showFace(SVGFaceName.DOWN);
break;
}
}
event.stopPropagation();
event.preventDefault();
}
@Override
public SVGFace getFace(SVGFaceName faceName) {
if (!faces.containsKey(faceName)) {
switch (faceName) {
case UP_HOVERING:
case UP_DISABLED:
case DOWN:
faceName = SVGFaceName.UP;
break;
case DOWN_HOVERING:
case DOWN_DISABLED:
faceName = SVGFaceName.DOWN;
break;
}
}
return super.getFace(faceName);
}
public void setRepeatDelay(int repeatDelayMillis) {
this.repeatDelayMillis = repeatDelayMillis;
}
public int getRepeatDelay() {
return repeatDelayMillis;
}
private void cancelTimer() {
if (timer != null) {
timer.cancel();
timer = null;
}
}
}
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