/*
* Ext GWT - Ext for GWT
* Copyright(c) 2007, 2008, Ext JS, LLC.
* licensing@extjs.com
*
* http://extjs.com/license
*/
package com.extjs.gxt.ui.client.widget;
import java.util.ArrayList;
import java.util.Stack;
import com.extjs.gxt.ui.client.XDOM;
import com.extjs.gxt.ui.client.util.Format;
import com.extjs.gxt.ui.client.util.Params;
import com.extjs.gxt.ui.client.util.Point;
import com.extjs.gxt.ui.client.util.Size;
import com.google.gwt.user.client.Timer;
import com.google.gwt.user.client.ui.RootPanel;
/**
* Displays a message in the bottom right region of the browser for a specified
* amount of time.
*/
public class Info extends ContentPanel {
private static Stack<Info> infoStack = new Stack<Info>();
private static ArrayList<Info> slots = new ArrayList<Info>();
/**
* Displays a message using the specified config.
*
* @param config the info config
*/
public static void display(InfoConfig config) {
pop().show(config);
}
/**
* Displays a message with the given title and text.
*
* @param title the title
* @param text the text
*/
public static void display(String title, String text) {
display(new InfoConfig(title, text));
}
/**
* Displays a message with the given title and text. The passed parameters
* will be applied to both the title and text before being displayed.
*
* @param title the info title
* @param text the info text
* @param params the paramters to be applied to the title and text
*/
public static void display(String title, String text, Params params) {
InfoConfig config = new InfoConfig(title, text, params);
display(config);
}
/**
* Displays a message with the given title and text. All {0},{1}... values in
* text will be replaced with values.
*
* @param title the message title
* @param text the message
* @param values the values to be substituted
*/
public static void display(String title, String text, String... values) {
display(new InfoConfig(title, text, new Params((Object[]) values)));
}
private static int firstAvail() {
int size = slots.size();
for (int i = 0; i < size; i++) {
if (slots.get(i) == null) {
return i;
}
}
return size;
}
private static Info pop() {
Info info = infoStack.size() > 0 ? (Info) infoStack.pop() : null;
if (info == null) {
info = new Info();
}
return info;
}
private static void push(Info info) {
infoStack.push(info);
}
protected InfoConfig config;
protected int level;
/**
* Creates a new info instance.
*/
public Info() {
baseStyle = "x-info";
frame = true;
setShadow(true);
setLayoutOnChange(true);
}
public void hide() {
super.hide();
afterHide();
}
/**
* Displays the info.
*
* @param config the info config
*/
public void show(InfoConfig config) {
this.config = config;
onShowInfo();
}
protected void onShowInfo() {
RootPanel.get().add(this);
el().makePositionable(true);
setTitle();
setText();
level = firstAvail();
slots.add(level, this);
Point p = position();
el().setLeftTop(p.x, p.y);
setSize(config.width, config.height);
afterShow();
}
protected Point position() {
Size s = XDOM.getViewportSize();
int left = (s.width - config.width - 10);
int top = s.height - config.height - 10 - (level * (config.height + 10));
return new Point(left, top);
}
private void afterHide() {
layer.hideShadow();
RootPanel.get().remove(this);
slots.set(level, null);
push(this);
}
private void afterShow() {
Timer t = new Timer() {
public void run() {
afterHide();
}
};
t.schedule(config.display);
}
private void setText() {
if (config.text != null) {
if (config.params != null) {
config.text = Format.substitute(config.text, config.params);
}
removeAll();
addText(config.text);
}
}
private void setTitle() {
if (config.title != null) {
head.setVisible(true);
if (config.params != null) {
config.title = Format.substitute(config.title, config.params);
}
setHeading(config.title);
} else {
head.setVisible(false);
}
}
}