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/*
@ITMillApache2LicenseForJavaFiles@
*/
package com.vaadin.terminal.gwt.client.ui;
import com.google.gwt.core.client.Scheduler;
import com.google.gwt.dom.client.Element;
import com.google.gwt.event.dom.client.BlurEvent;
import com.google.gwt.event.dom.client.BlurHandler;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.event.dom.client.FocusEvent;
import com.google.gwt.event.dom.client.FocusHandler;
import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.user.client.Command;
import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.Event;
import com.google.gwt.user.client.ui.Button;
import com.vaadin.terminal.gwt.client.ApplicationConnection;
import com.vaadin.terminal.gwt.client.BrowserInfo;
import com.vaadin.terminal.gwt.client.EventHelper;
import com.vaadin.terminal.gwt.client.EventId;
import com.vaadin.terminal.gwt.client.Paintable;
import com.vaadin.terminal.gwt.client.UIDL;
import com.vaadin.terminal.gwt.client.Util;
import com.vaadin.terminal.gwt.client.VTooltip;
public class VNativeButton extends Button implements Paintable, ClickHandler,
FocusHandler, BlurHandler {
public static final String CLASSNAME = "v-nativebutton";
protected String width = null;
protected String id;
protected ApplicationConnection client;
protected Element errorIndicatorElement;
protected final Element captionElement = DOM.createSpan();
protected Icon icon;
/**
* Helper flag to handle special-case where the button is moved from under
* mouse while clicking it. In this case mouse leaves the button without
* moving.
*/
private boolean clickPending;
private HandlerRegistration focusHandlerRegistration;
private HandlerRegistration blurHandlerRegistration;
public VNativeButton() {
setStyleName(CLASSNAME);
getElement().appendChild(captionElement);
captionElement.setClassName(getStyleName() + "-caption");
addClickHandler(this);
sinkEvents(VTooltip.TOOLTIP_EVENTS);
sinkEvents(Event.ONMOUSEDOWN);
sinkEvents(Event.ONMOUSEUP);
}
public void updateFromUIDL(UIDL uidl, ApplicationConnection client) {
// Ensure correct implementation,
// but don't let container manage caption etc.
if (client.updateComponent(this, uidl, false)) {
return;
}
focusHandlerRegistration = EventHelper.updateFocusHandler(this, client,
focusHandlerRegistration);
blurHandlerRegistration = EventHelper.updateBlurHandler(this, client,
blurHandlerRegistration);
// Save details
this.client = client;
id = uidl.getId();
// Set text
setText(uidl.getStringAttribute("caption"));
// handle error
if (uidl.hasAttribute("error")) {
if (errorIndicatorElement == null) {
errorIndicatorElement = DOM.createSpan();
errorIndicatorElement.setClassName("v-errorindicator");
}
getElement().insertBefore(errorIndicatorElement, captionElement);
// Fix for IE6, IE7
if (BrowserInfo.get().isIE()) {
errorIndicatorElement.setInnerText(" ");
}
} else if (errorIndicatorElement != null) {
getElement().removeChild(errorIndicatorElement);
errorIndicatorElement = null;
}
if (uidl.hasAttribute("icon")) {
if (icon == null) {
icon = new Icon(client);
getElement().insertBefore(icon.getElement(), captionElement);
}
icon.setUri(uidl.getStringAttribute("icon"));
} else {
if (icon != null) {
getElement().removeChild(icon.getElement());
icon = null;
}
}
if (BrowserInfo.get().isIE7()) {
/*
* Workaround for IE7 size calculation issues. Deferred because of
* issues with a button with an icon using the reindeer theme
*/
if (width.equals("")) {
Scheduler.get().scheduleDeferred(new Command() {
public void execute() {
setWidth("");
setWidth(getOffsetWidth() + "px");
}
});
}
}
}
@Override
public void setText(String text) {
captionElement.setInnerText(text);
}
@Override
public void onBrowserEvent(Event event) {
super.onBrowserEvent(event);
if (DOM.eventGetType(event) == Event.ONLOAD) {
Util.notifyParentOfSizeChange(this, true);
} else if (DOM.eventGetType(event) == Event.ONMOUSEDOWN
&& event.getButton() == Event.BUTTON_LEFT) {
clickPending = true;
} else if (DOM.eventGetType(event) == Event.ONMOUSEMOVE) {
clickPending = false;
} else if (DOM.eventGetType(event) == Event.ONMOUSEOUT) {
if (clickPending) {
click();
}
clickPending = false;
}
if (client != null) {
client.handleTooltipEvent(event, this);
}
}
@Override
public void setWidth(String width) {
/* Workaround for IE7 button size part 1 (#2014) */
if (BrowserInfo.get().isIE7() && this.width != null) {
if (this.width.equals(width)) {
return;
}
if (width == null) {
width = "";
}
}
this.width = width;
super.setWidth(width);
/* Workaround for IE7 button size part 2 (#2014) */
if (BrowserInfo.get().isIE7()) {
super.setWidth(width);
}
}
/*
* (non-Javadoc)
*
* @see
* com.google.gwt.event.dom.client.ClickHandler#onClick(com.google.gwt.event
* .dom.client.ClickEvent)
*/
public void onClick(ClickEvent event) {
if (id == null || client == null) {
return;
}
if (BrowserInfo.get().isSafari()) {
VNativeButton.this.setFocus(true);
}
client.updateVariable(id, "state", true, true);
clickPending = false;
}
public void onFocus(FocusEvent arg0) {
client.updateVariable(id, EventId.FOCUS, "", true);
}
public void onBlur(BlurEvent arg0) {
client.updateVariable(id, EventId.BLUR, "", true);
}
}
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