GWT
看了看google web toolkit,发现还不错,用了几个常用的控件,如果用这个冬冬构建自己小型的网络环境还是相当迅速的。但是,大的项目工程还是。。。有待考察
- Google Web Toolkit ArchitectureGWT has four major components:
a Java-to-JavaScript compiler(GWT Java-to-JavaScript Compiler),
a "hosted" web browser(GWT Hosted Web Browser),
and two Java class libraries
(JRE emulation library<java.lang,java.util> and GWT Web UI class library).
- Sample with eclipse
①GMT_HOMEを設定する。コマンドプロンプトを起動する。
②%GWT_HOME%\projectCreator -eclipse HelloGWT -out C:\YangStand\HelloGwtで
プロジェクトを作成。
③%GWT_HOME%\applicationCreator -eclipse HelloGWT -out C:\YangStand\HelloGwt
org.yang.gwt.sample.widget.client.HelloGwt (className,フルパッケージ指定)で
アプリケーションの雛形を作成。
- Widget
①com.google.gwt.user.client.ui.UIObjectのDirect Known Subclasses:
MenuItem, TreeItem, Widget
②Widget adds support for receiving events from the browser
- widgetのButtonWidgetサンプル--><input type="button">
ButtonWidget.html
<html>
<head>
<title>Wrapper HTML for ButtonWidget</title>
<meta name='gwt:module' content='org.yang.gwt.sample.widget.ButtonWidget'>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
</head>
<body>
<script language="javascript" src="gwt.js"></script>
<table align=center>
<tr>
<td id="button1"></td>
<td> </td>
<td id="button2"></td>
<td> </td>
<td id="button3"></td>
</tr>
<tr>
<td id="label" />
<td> </td>
<td></td>
<td> </td>
<td></td>
</tr>
</table>
</body>
</html>
ButtonWidget.java
package org.yang.gwt.sample.widget.client;
import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.ClickListener;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.RootPanel;
import com.google.gwt.user.client.ui.Widget;
/**
* Entry point classes define <code>onModuleLoad()</code>.
*/
public class ButtonWidget implements EntryPoint {
/**
* This is the entry point method.
*/
public void onModuleLoad() {
final Label label = new Label();
final Button button = new Button("Click me(display)");
button.addClickListener(new ClickListener() {
public void onClick(Widget sender) {
if (label.getText().equals(""))
label.setText("Hello World!");
else
label.setText("");
}
});
final Button alertbutton = new Button("Jump", new ClickListener() {
public void onClick(Widget sender) {
Window.alert("世界");
}
});
final Button disablebutton = new Button("Disable");
disablebutton.setEnabled(false);
RootPanel.get("button1").add(button);
RootPanel.get("label").add(label);
RootPanel.get("button2").add(alertbutton);
RootPanel.get("button3").add(disablebutton);
}
}
- widgetのRadioButtonWidgetサンプル--><input type="radio">
%GWT_HOME%\projectCreator -eclipse RadioButtonWidget -out C:\YangStand\RadioButtonWidget
%GWT_HOME%\applicationCreator -eclipse RadioButtonWidget -out
C:\YangStand\RadioButtonWidget
org.yang.gwt.sample.widget.client.RadioButton
RadioButtonWidget.html
<html>
<head>
<title>Wrapper HTML for RadioButtonWidget</title>
<meta name='gwt:module' content='org.yang.gwt.sample.widget.RadioButtonWidget'>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
</head>
<body>
<script language="javascript" src="gwt.js"></script>
<iframe id="__gwt_historyFrame" style="width:0;height:0;border:0"></iframe>
<table align=center>
<tr>
<td id="radio1"></td>
<td id="radio2"></td>
<td id="radio3"></td>
</tr>
<tr>
<td id="label" colspan="4" align="center"></td>
</tr>
</table>
</body>
</html>
RadioButtonWidget.java
package org.yang.gwt.sample.widget.client;
import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.user.client.ui.ClickListener;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.RadioButton;
import com.google.gwt.user.client.ui.RootPanel;
import com.google.gwt.user.client.ui.Widget;
/**
* Entry point classes define <code>onModuleLoad()</code>.
*/
public class RadioButtonWidget implements EntryPoint {
public void onModuleLoad() {
final Label label = new Label();
RadioButton rb1 = new RadioButton("radioGroup");
rb1.setText("非活性");
rb1.setEnabled(false);
rb1.setChecked(true);
RadioButton rb2 = new RadioButton("radioGroup", "bar");
rb2.addClickListener(new ClickListener() {
public void onClick(Widget sender) {
label.setText("barをセットします");
}
});
RadioButton rb3 = new RadioButton("radioGroup", "<strong>baz</strong>", true);
rb3.addClickListener(new ClickListener() {
public void onClick(Widget sender) {
label.setText("bazをセットします");
}
});
RootPanel.get("radio1").add(rb1);
RootPanel.get("radio2").add(rb2);
RootPanel.get("radio3").add(rb3);
RootPanel.get("label").add(label);
}
}
- widgetのCheckBoxWidgetサンプル--><input type="checkbox">
CheckBoxWidget.html
<html>
<head>
<title>Wrapper HTML for CheckBoxWidget</title>
<meta name='gwt:module' content='org.yang.gwt.sample.widget.CheckBoxWidget'>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
</head>
<body>
<script language="javascript" src="gwt.js"></script>
<table align=left>
<tr>
<td id="checkBox1"></td><td id="label"></td>
</tr>
<tr>
<td id="checkBox2"></td><td> </td>
</tr>
<tr>
<td id="checkBox3"></td><td> </td>
</tr>
<tr>
<td id="checkBox4"></td><td> </td>
</tr>
</table>
</body>
</html>
CheckBoxWidget.java
package org.yang.gwt.sample.widget.client;
import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.CheckBox;
import com.google.gwt.user.client.ui.ClickListener;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.RootPanel;
import com.google.gwt.user.client.ui.Widget;
public class CheckBoxWidget implements EntryPoint {
public void onModuleLoad() {
final CheckBox checkBox1 = new CheckBox();
final CheckBox checkBox2 = new CheckBox("アラート");
final CheckBox checkBox3 = new CheckBox("<Strong>ラベル英語表示</Strong>",
true);
final CheckBox checkBox4 = new CheckBox();
final Label label = new Label();
checkBox1.setText("ラベル");
checkBox1.addClickListener(new ClickListener() {
public void onClick(Widget sender) {
if (((CheckBox) sender).isChecked()) {
if (checkBox3.isChecked()) {
checkBox1.setText("Label");
label.setText("Hello world");
} else {
checkBox1.setText("ラベル");
label.setText("hola 世界");
}
} else {
label.setText("");
}
}
});
checkBox2.addClickListener(new ClickListener() {
public void onClick(Widget sender) {
if (((CheckBox) sender).isChecked()) {
if (checkBox3.isChecked()) {
Window.alert("Hello world!");
} else {
Window.alert("hola 世界!");
}
}
}
});
checkBox3.addClickListener(new ClickListener() {
public void onClick(Widget sender) {
if (((CheckBox) sender).isChecked()) {
checkBox1.setText("label");
checkBox2.setText("click me");
checkBox3.setHTML("<Strong>English label</Strong>");
checkBox4.setText("disable");
} else {
checkBox1.setText("ラベル");
checkBox2.setText("クリック");
checkBox3.setHTML("<Strong>英語表示</Strong>");
checkBox4.setText("非活性");
}
}
});
checkBox4.addClickListener(new ClickListener() {
public void onClick(Widget sender) {
if (((CheckBox) sender).isChecked()) {
boolean confirmDis;
if (checkBox3.isChecked()) {
confirmDis = Window.confirm("other checkboxes set to disabled?");
} else {
confirmDis = Window.confirm("他のチェックが非活性にする?");
}
if (confirmDis){
checkBox1.setEnabled(false);
checkBox2.setEnabled(false);
checkBox3.setEnabled(false);
}
} else {
checkBox1.setEnabled(true);
checkBox2.setEnabled(true);
checkBox3.setEnabled(true);
}
}
});
RootPanel.get("checkBox1").add(checkBox1);
RootPanel.get("checkBox2").add(checkBox2);
RootPanel.get("checkBox3").add(checkBox3);
RootPanel.get("checkBox4").add(checkBox4);
RootPanel.get("label").add(label);
}
}
- widgetのTextBoxWidgetサンプル--><input type="text">
TextBoxWidget.html
<html>
<head>
<title>Wrapper HTML for TextBoxWidget</title>
<meta name='gwt:module' content='org.yang.gwt.sample.widget.TextBoxWidget'>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
</head>
<body>
<script language="javascript" src="gwt.js"></script>
<iframe id="__gwt_historyFrame" style="width:0;height:0;border:0"></iframe>
<table align=center>
<tr>
<td>名前</td>
<td id="inputName"></td>
</tr>
<tr>
<td>パスワード</td>
<td id="inputPass"></td>
</tr>
<tr>
<td>数字入力</td>
<td id="inputDigit"></td>
</tr>
</table>
</body>
</html>
TextBoxWidget.java
package org.yang.gwt.sample.widget.client;
import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.ui.ChangeListener;
import com.google.gwt.user.client.ui.KeyboardListenerAdapter;
import com.google.gwt.user.client.ui.PasswordTextBox;
import com.google.gwt.user.client.ui.RootPanel;
import com.google.gwt.user.client.ui.TextBox;
import com.google.gwt.user.client.ui.Widget;
public class TextBoxWidget implements EntryPoint {
public void onModuleLoad() {
TextBox name = new TextBox();
PasswordTextBox password = new PasswordTextBox();
TextBox limitInput = new TextBox();
limitInput.addKeyboardListener(new KeyboardListenerAdapter() {
public void onKeyPress(Widget sender, char keyCode, int modifiers) {
if (!Character.isDigit(keyCode)) {
((TextBox) sender).cancelKey();
}
}
});
limitInput.addChangeListener(new ChangeListener() {
public void onChange(Widget sender) {
System.out.println("input:::" + sender.getElement());
System.out.println(DOM.getAttribute(sender.getElement(),
"value"));
System.out.println(((TextBox) sender).getText());
String str = ((TextBox) sender).getText();
char[] c = str.toCharArray();
for (int i = 0; i < c.length; i++) {
if (!Character.isDigit(c[i])) {
((TextBox) sender).setText("");
return;
}
}
}
});
RootPanel.get("inputName").add(name);
RootPanel.get("inputPass").add(password);
RootPanel.get("inputDigit").add(limitInput);
}
}
- widgetのTextAreaWidgetサンプル--><TEXTAREA>
TextAreaWidget.html
<html>
<head>
<title>Wrapper HTML for TextAreaWidget</title>
<meta name='gwt:module' content='org.yang.gwt.sample.widget.TextAreaWidget'>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
</head>
<body>
<script language="javascript" src="gwt.js"></script>
<iframe id="__gwt_historyFrame" style="width:0;height:0;border:0"></iframe>
<table align=center>
<tr>
<td>名前</td>
<td id="inputName"></td>
</tr>
<tr>
<td>コメント</td>
<td id="inputComent"></td>
</tr>
</table>
</body>
</html>
TextAreaWidget.java
package org.yang.gwt.sample.widget.client;
import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.ChangeListener;
import com.google.gwt.user.client.ui.RootPanel;
import com.google.gwt.user.client.ui.TextArea;
import com.google.gwt.user.client.ui.TextBox;
import com.google.gwt.user.client.ui.Widget;
public class TextAreaWidget implements EntryPoint {
public void onModuleLoad() {
TextBox tb = new TextBox();
TextArea ta = new TextArea();
ta.setCharacterWidth(80);
ta.setVisibleLines(10);
ta.addChangeListener(new ChangeListener() {
public void onChange(Widget sender) {
System.out.println("input:::" + sender.getElement());
System.out.println(DOM.getAttribute(sender.getElement(),
"value"));
System.out.println(((TextArea) sender).getText());
int charCount = ((TextArea) sender).getCursorPos();
System.out.println(charCount);
Window.alert(charCount + "文字入力しました");
String str = ((TextArea) sender).getText();
System.out.println(str);
Window.alert(str);
}
});
RootPanel.get("inputName").add(tb);
RootPanel.get("inputComent").add(ta);
}
}
備考:
バッチファイルで一発生成する
call %GWT_HOME%\projectCreator -eclipse CheckBoxWidget -out C:\YangStand\CheckBoxWidget
call
%GWT_HOME%\applicationCreator -eclipse CheckBoxWidget -out
C:\YangStand\CheckBoxWidget
org.yang.gwt.sample.widget.client.CheckBoxWidget
call %GWT_HOME%\projectCreator -eclipse TextBoxWidget -out C:\YangStand\TextBoxWidget
call
%GWT_HOME%\applicationCreator -eclipse TextBoxWidget -out
C:\YangStand\TextBoxWidget
org.yang.gwt.sample.widget.client.TextBoxWidget
…
posted on 2007-09-21 00:06
Yama的家 阅读(1283)
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