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/*
@VaadinApache2LicenseForJavaFiles@
*/
package com.vaadin.terminal.gwt.client.ui;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import com.google.gwt.dom.client.Style;
import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.Element;
import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwt.user.client.ui.SimplePanel;
import com.google.gwt.user.client.ui.Widget;
import com.vaadin.terminal.gwt.client.ApplicationConnection;
import com.vaadin.terminal.gwt.client.BrowserInfo;
import com.vaadin.terminal.gwt.client.ComponentConnector;
import com.vaadin.terminal.gwt.client.ConnectorMap;
import com.vaadin.terminal.gwt.client.StyleConstants;
import com.vaadin.terminal.gwt.client.UIDL;
import com.vaadin.terminal.gwt.client.Util;
import com.vaadin.terminal.gwt.client.VCaption;
import com.vaadin.terminal.gwt.client.VConsole;
import com.vaadin.terminal.gwt.client.ValueMap;
public class VCssLayout extends SimplePanel {
public static final String TAGNAME = "csslayout";
public static final String CLASSNAME = "v-" + TAGNAME;
FlowPane panel = new FlowPane();
Element margin = DOM.createDiv();
public VCssLayout() {
super();
getElement().appendChild(margin);
setStyleName(CLASSNAME);
margin.setClassName(CLASSNAME + "-margin");
setWidget(panel);
}
@Override
protected Element getContainerElement() {
return margin;
}
public class FlowPane extends FlowPanel {
private final HashMap<Widget, VCaption> widgetToCaption = new HashMap<Widget, VCaption>();
private ApplicationConnection client;
private int lastIndex;
public FlowPane() {
super();
setStyleName(CLASSNAME + "-container");
}
public void updateFromUIDL(UIDL uidl, ApplicationConnection client) {
// for later requests
this.client = client;
final Collection<Widget> oldWidgets = new HashSet<Widget>();
for (final Iterator<Widget> iterator = iterator(); iterator
.hasNext();) {
oldWidgets.add(iterator.next());
}
ValueMap mapAttribute = null;
if (uidl.hasAttribute("css")) {
mapAttribute = uidl.getMapAttribute("css");
}
lastIndex = 0;
for (final Iterator<Object> i = uidl.getChildIterator(); i
.hasNext();) {
final UIDL r = (UIDL) i.next();
final ComponentConnector child = client.getPaintable(r);
final Widget widget = child.getWidget();
if (widget.getParent() == this) {
oldWidgets.remove(widget);
VCaption vCaption = widgetToCaption.get(widget);
if (vCaption != null) {
addOrMove(vCaption, lastIndex++);
oldWidgets.remove(vCaption);
}
}
addOrMove(widget, lastIndex++);
if (mapAttribute != null && mapAttribute.containsKey(r.getId())) {
String css = null;
try {
Style style = widget.getElement().getStyle();
css = mapAttribute.getString(r.getId());
String[] cssRules = css.split(";");
for (int j = 0; j < cssRules.length; j++) {
String[] rule = cssRules[j].split(":");
if (rule.length == 0) {
continue;
} else {
style.setProperty(
makeCamelCase(rule[0].trim()),
rule[1].trim());
}
}
} catch (Exception e) {
VConsole.log("CssLayout encounterd invalid css string: "
+ css);
}
}
if (!r.getBooleanAttribute("cached")) {
child.updateFromUIDL(r, client);
}
}
// loop oldWidgetWrappers that where not re-attached and unregister
// them
for (Widget w : oldWidgets) {
remove(w);
ConnectorMap paintableMap = ConnectorMap.get(client);
if (paintableMap.isConnector(w)) {
final ComponentConnector p = ConnectorMap.get(client)
.getConnector(w);
client.unregisterPaintable(p);
}
VCaption vCaption = widgetToCaption.remove(w);
if (vCaption != null) {
remove(vCaption);
}
}
}
private void addOrMove(Widget child, int index) {
if (child.getParent() == this) {
int currentIndex = getWidgetIndex(child);
if (index == currentIndex) {
return;
}
}
insert(child, index);
}
public void updateCaption(ComponentConnector paintable) {
Widget widget = paintable.getWidget();
VCaption caption = widgetToCaption.get(widget);
if (VCaption.isNeeded(paintable.getState())) {
if (caption == null) {
caption = new VCaption(paintable, client);
widgetToCaption.put(widget, caption);
insert(caption, getWidgetIndex(widget));
lastIndex++;
} else if (!caption.isAttached()) {
insert(caption, getWidgetIndex(widget));
lastIndex++;
}
caption.updateCaption();
} else if (caption != null) {
remove(caption);
widgetToCaption.remove(widget);
}
}
ComponentConnector getComponent(Element element) {
return Util
.getConnectorForElement(client, VCssLayout.this, element);
}
}
private static final String makeCamelCase(String cssProperty) {
// TODO this might be cleaner to implement with regexp
while (cssProperty.contains("-")) {
int indexOf = cssProperty.indexOf("-");
cssProperty = cssProperty.substring(0, indexOf)
+ String.valueOf(cssProperty.charAt(indexOf + 1))
.toUpperCase() + cssProperty.substring(indexOf + 2);
}
if ("float".equals(cssProperty)) {
if (BrowserInfo.get().isIE()) {
return "styleFloat";
} else {
return "cssFloat";
}
}
return cssProperty;
}
/**
* Sets CSS classes for margin and spacing based on the given parameters.
*
* @param margins
* A {@link VMarginInfo} object that provides info on
* top/left/bottom/right margins
* @param spacing
* true to enable spacing, false otherwise
*/
protected void setMarginAndSpacingStyles(VMarginInfo margins,
boolean spacing) {
setStyleName(margin, VCssLayout.CLASSNAME + "-"
+ StyleConstants.MARGIN_TOP, margins.hasTop());
setStyleName(margin, VCssLayout.CLASSNAME + "-"
+ StyleConstants.MARGIN_RIGHT, margins.hasRight());
setStyleName(margin, VCssLayout.CLASSNAME + "-"
+ StyleConstants.MARGIN_BOTTOM, margins.hasBottom());
setStyleName(margin, VCssLayout.CLASSNAME + "-"
+ StyleConstants.MARGIN_LEFT, margins.hasLeft());
setStyleName(margin, VCssLayout.CLASSNAME + "-" + "spacing", spacing);
}
}
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