/*
* Copyright 2000-2016 Vaadin Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.vaadin.client.ui.panel;
import com.google.gwt.dom.client.NativeEvent;
import com.google.gwt.dom.client.Style;
import com.google.gwt.dom.client.Style.Unit;
import com.vaadin.client.ApplicationConnection;
import com.vaadin.client.ComponentConnector;
import com.vaadin.client.ConnectorHierarchyChangeEvent;
import com.vaadin.client.LayoutManager;
import com.vaadin.client.Paintable;
import com.vaadin.client.Profiler;
import com.vaadin.client.UIDL;
import com.vaadin.client.ui.AbstractSingleComponentContainerConnector;
import com.vaadin.client.ui.ClickEventHandler;
import com.vaadin.client.ui.PostLayoutListener;
import com.vaadin.client.ui.ShortcutActionHandler;
import com.vaadin.client.ui.SimpleManagedLayout;
import com.vaadin.client.ui.VPanel;
import com.vaadin.client.ui.layout.MayScrollChildren;
import com.vaadin.shared.MouseEventDetails;
import com.vaadin.shared.ui.ComponentStateUtil;
import com.vaadin.shared.ui.Connect;
import com.vaadin.shared.ui.panel.PanelServerRpc;
import com.vaadin.shared.ui.panel.PanelState;
import com.vaadin.ui.Panel;
@Connect(Panel.class)
public class PanelConnector extends AbstractSingleComponentContainerConnector
implements Paintable, SimpleManagedLayout, PostLayoutListener,
MayScrollChildren {
private Integer uidlScrollTop;
private ClickEventHandler clickEventHandler = new ClickEventHandler(this) {
@Override
protected void fireClick(NativeEvent event,
MouseEventDetails mouseDetails) {
getRpcProxy(PanelServerRpc.class).click(mouseDetails);
}
};
private Integer uidlScrollLeft;
@Override
public void init() {
super.init();
VPanel panel = getWidget();
LayoutManager layoutManager = getLayoutManager();
layoutManager.registerDependency(this, panel.captionNode);
layoutManager.registerDependency(this, panel.bottomDecoration);
layoutManager.registerDependency(this, panel.contentNode);
}
@Override
public void onUnregister() {
VPanel panel = getWidget();
LayoutManager layoutManager = getLayoutManager();
layoutManager.unregisterDependency(this, panel.captionNode);
layoutManager.unregisterDependency(this, panel.bottomDecoration);
layoutManager.unregisterDependency(this, panel.contentNode);
}
@Override
public boolean delegateCaptionHandling() {
return false;
}
@Override
public void updateFromUIDL(UIDL uidl, ApplicationConnection client) {
if (isRealUpdate(uidl)) {
// Handle caption displaying and style names, prior generics.
// Affects size calculations
// Restore default stylenames
getWidget().contentNode.setClassName(VPanel.CLASSNAME + "-content");
getWidget().bottomDecoration
.setClassName(VPanel.CLASSNAME + "-deco");
getWidget().captionNode.setClassName(VPanel.CLASSNAME + "-caption");
boolean hasCaption = false;
if (getState().caption != null && !"".equals(getState().caption)) {
getWidget().setCaption(getState().caption);
hasCaption = true;
} else {
getWidget().setCaption("");
getWidget().captionNode
.setClassName(VPanel.CLASSNAME + "-nocaption");
}
// Add proper stylenames for all elements. This way we can prevent
// unwanted CSS selector inheritance.
final String captionBaseClass = VPanel.CLASSNAME
+ (hasCaption ? "-caption" : "-nocaption");
final String contentBaseClass = VPanel.CLASSNAME + "-content";
final String decoBaseClass = VPanel.CLASSNAME + "-deco";
String captionClass = captionBaseClass;
String contentClass = contentBaseClass;
String decoClass = decoBaseClass;
if (ComponentStateUtil.hasStyles(getState())) {
for (String style : getState().styles) {
captionClass += " " + captionBaseClass + "-" + style;
contentClass += " " + contentBaseClass + "-" + style;
decoClass += " " + decoBaseClass + "-" + style;
}
}
getWidget().captionNode.setClassName(captionClass);
getWidget().contentNode.setClassName(contentClass);
getWidget().bottomDecoration.setClassName(decoClass);
getWidget().makeScrollable();
}
if (!isRealUpdate(uidl)) {
return;
}
clickEventHandler.handleEventHandlerRegistration();
getWidget().client = client;
getWidget().id = uidl.getId();
if (getIconUri() != null) {
getWidget().setIconUri(getIconUri(), client);
} else {
getWidget().setIconUri(null, client);
}
getWidget().setErrorIndicatorVisible(isErrorIndicatorVisible());
// We may have actions attached to this panel
if (uidl.getChildCount() > 0) {
final int cnt = uidl.getChildCount();
for (int i = 0; i < cnt; i++) {
UIDL childUidl = uidl.getChildUIDL(i);
if (childUidl.getTag().equals("actions")) {
if (getWidget().shortcutHandler == null) {
getWidget().shortcutHandler = new ShortcutActionHandler(
getConnectorId(), client);
}
getWidget().shortcutHandler.updateActionMap(childUidl);
}
}
}
if (getState().scrollTop != getWidget().scrollTop) {
// Sizes are not yet up to date, so changing the scroll position
// is deferred to after the layout phase
uidlScrollTop = getState().scrollTop;
}
if (getState().scrollLeft != getWidget().scrollLeft) {
// Sizes are not yet up to date, so changing the scroll position
// is deferred to after the layout phase
uidlScrollLeft = getState().scrollLeft;
}
// And apply tab index
getWidget().contentNode.setTabIndex(getState().tabIndex);
}
@Override
public void updateCaption(ComponentConnector component) {
// NOP: layouts caption, errors etc not rendered in Panel
}
@Override
public VPanel getWidget() {
return (VPanel) super.getWidget();
}
@Override
public void layout() {
updateSizes();
}
void updateSizes() {
VPanel panel = getWidget();
LayoutManager layoutManager = getLayoutManager();
Profiler.enter("PanelConnector.layout getHeights");
int top = layoutManager.getOuterHeight(panel.captionNode);
int bottom = layoutManager.getInnerHeight(panel.bottomDecoration);
Profiler.leave("PanelConnector.layout getHeights");
Profiler.enter("PanelConnector.layout modify style");
Style style = panel.getElement().getStyle();
panel.captionNode.getParentElement().getStyle().setMarginTop(-top,
Unit.PX);
panel.bottomDecoration.getStyle().setMarginBottom(-bottom, Unit.PX);
style.setPaddingTop(top, Unit.PX);
style.setPaddingBottom(bottom, Unit.PX);
Profiler.leave("PanelConnector.layout modify style");
// Update scroll positions
Profiler.enter("PanelConnector.layout update scroll positions");
panel.contentNode.setScrollTop(panel.scrollTop);
panel.contentNode.setScrollLeft(panel.scrollLeft);
Profiler.leave("PanelConnector.layout update scroll positions");
// Read actual value back to ensure update logic is correct
Profiler.enter("PanelConnector.layout read scroll positions");
panel.scrollTop = panel.contentNode.getScrollTop();
panel.scrollLeft = panel.contentNode.getScrollLeft();
Profiler.leave("PanelConnector.layout read scroll positions");
}
@Override
public void postLayout() {
VPanel panel = getWidget();
if (uidlScrollTop != null) {
// IE / Safari fix for when scroll top is set to greater than panel
// height
int maxScroll = panel.getWidget().getOffsetHeight();
if (uidlScrollTop > maxScroll) {
uidlScrollTop = maxScroll;
}
panel.contentNode.setScrollTop(uidlScrollTop.intValue());
// Read actual value back to ensure update logic is correct
// TODO Does this trigger reflows?
panel.scrollTop = panel.contentNode.getScrollTop();
uidlScrollTop = null;
}
if (uidlScrollLeft != null) {
panel.contentNode.setScrollLeft(uidlScrollLeft.intValue());
// Read actual value back to ensure update logic is correct
// TODO Does this trigger reflows?
panel.scrollLeft = panel.contentNode.getScrollLeft();
uidlScrollLeft = null;
}
}
@Override
public PanelState getState() {
return (PanelState) super.getState();
}
@Override
public void onConnectorHierarchyChange(
ConnectorHierarchyChangeEvent event) {
// We always have 1 child, unless the child is hidden
getWidget().setWidget(getContentWidget());
}
}