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authorCasper van Donderen <casper.vandonderen@nokia.com>2012-06-05 12:51:07 +0200
committerQt by Nokia <qt-info@nokia.com>2012-06-05 15:18:03 +0200
commit4629dc71525a638c0bae89ad67990a1ff14ea9c4 (patch)
treeff81b70586896e7b2f1c718e3b5385fae4483cc3 /src/script/doc/snippets/code/doc_src_qtscript.js
parentf6fdd296d47e1ce44c07aab81098c20a5260f7fd (diff)
downloadqtscript-4629dc71525a638c0bae89ad67990a1ff14ea9c4.tar.gz
Doc: Modularize QtScript documentation.
Change-Id: I042d9bafe4f48a8cd23306f0864b6872776d0153 Reviewed-by: Kent Hansen <kent.hansen@nokia.com>
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+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+** * Redistributions of source code must retain the above copyright
+** notice, this list of conditions and the following disclaimer.
+** * Redistributions in binary form must reproduce the above copyright
+** notice, this list of conditions and the following disclaimer in
+** the documentation and/or other materials provided with the
+** distribution.
+** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
+** the names of its contributors may be used to endorse or promote
+** products derived from this software without specific prior written
+** permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//! [2]
+function myInterestingScriptFunction() {
+ // ...
+}
+// ...
+myQObject.somethingChanged.connect(myInterestingScriptFunction);
+//! [2]
+
+
+//! [3]
+myQObject.somethingChanged.connect(myOtherQObject.doSomething);
+//! [3]
+
+
+//! [4]
+myQObject.somethingChanged.disconnect(myInterestingFunction);
+myQObject.somethingChanged.disconnect(myOtherQObject.doSomething);
+//! [4]
+
+
+//! [5]
+var obj = { x: 123 };
+var fun = function() { print(this.x); };
+myQObject.somethingChanged.connect(obj, fun);
+//! [5]
+
+
+//! [6]
+myQObject.somethingChanged.disconnect(obj, fun);
+//! [6]
+
+
+//! [7]
+var obj = { x: 123, fun: function() { print(this.x); } };
+myQObject.somethingChanged.connect(obj, "fun");
+//! [7]
+
+
+//! [8]
+myQObject.somethingChanged.disconnect(obj, "fun");
+//! [8]
+
+
+//! [9]
+try {
+ myQObject.somethingChanged.connect(myQObject, "slotThatDoesntExist");
+} catch (e) {
+ print(e);
+}
+//! [9]
+
+
+//! [10]
+myQObject.somethingChanged("hello");
+//! [10]
+
+
+//! [11]
+myQObject.myOverloadedSlot(10); // will call the int overload
+myQObject.myOverloadedSlot("10"); // will call the QString overload
+//! [11]
+
+
+//! [12]
+myQObject['myOverloadedSlot(int)']("10"); // call int overload; the argument is converted to an int
+myQObject['myOverloadedSlot(QString)'](10); // call QString overload; the argument is converted to a string
+//! [12]
+
+
+//! [14]
+myQObject.enabled = true;
+
+// ...
+
+myQObject.enabled = !myQObject.enabled;
+//! [14]
+
+
+//! [15]
+myDialog.okButton
+//! [15]
+
+
+//! [16]
+myDialog.okButton.objectName = "cancelButton";
+// from now on, myDialog.cancelButton references the button
+//! [16]
+
+
+//! [17]
+var okButton = myDialog.findChild("okButton");
+if (okButton != null) {
+ // do something with the OK button
+}
+
+var buttons = myDialog.findChildren(RegExp("button[0-9]+"));
+for (var i = 0; i < buttons.length; ++i) {
+ // do something with buttons[i]
+}
+//! [17]
+
+
+//! [21]
+var obj = new MyObject;
+obj.setEnabled( true );
+print( "obj is enabled: " + obj.isEnabled() );
+//! [21]
+
+
+//! [22]
+var obj = new MyObject;
+obj.enabled = true;
+print( "obj is enabled: " + obj.enabled );
+//! [22]
+
+
+//! [26]
+function enabledChangedHandler( b )
+{
+ print( "state changed to: " + b );
+}
+
+function init()
+{
+ var obj = new MyObject();
+ // connect a script function to the signal
+ obj["enabledChanged(bool)"].connect(enabledChangedHandler);
+ obj.enabled = true;
+ print( "obj is enabled: " + obj.enabled );
+}
+//! [26]
+
+
+//! [27]
+var o = new Object();
+o.foo = 123;
+print(o.hasOwnProperty('foo')); // true
+print(o.hasOwnProperty('bar')); // false
+print(o); // calls o.toString(), which returns "[object Object]"
+//! [27]
+
+
+//! [28]
+function Person(name)
+{
+ this.name = name;
+}
+//! [28]
+
+
+//! [29]
+Person.prototype.toString = function() { return "Person(name: " + this.name + ")"; }
+//! [29]
+
+
+//! [30]
+var p1 = new Person("John Doe");
+var p2 = new Person("G.I. Jane");
+print(p1); // "Person(name: John Doe)"
+print(p2); // "Person(name: G.I. Jane)"
+//! [30]
+
+
+//! [31]
+print(p1.hasOwnProperty('name')); // 'name' is an instance variable, so this returns true
+print(p1.hasOwnProperty('toString')); // returns false; inherited from prototype
+print(p1 instanceof Person); // true
+print(p1 instanceof Object); // true
+//! [31]
+
+
+//! [32]
+function Employee(name, salary)
+{
+ Person.call(this, name); // call base constructor
+
+ this.salary = salary;
+}
+
+// set the prototype to be an instance of the base class
+Employee.prototype = new Person();
+
+// initialize prototype
+Employee.prototype.toString = function() {
+ // ...
+}
+//! [32]
+
+
+//! [33]
+var e = new Employee("Johnny Bravo", 5000000);
+print(e instanceof Employee); // true
+print(e instanceof Person); // true
+print(e instanceof Object); // true
+print(e instanceof Array); // false
+//! [33]
+
+
+//! [40]
+var o = new Object();
+(o.__proto__ === Object.prototype); // this evaluates to true
+//! [40]
+
+
+//! [41]
+var o = new Object();
+o.__defineGetter__("x", function() { return 123; });
+var y = o.x; // 123
+//! [41]
+
+
+//! [42]
+var o = new Object();
+o.__defineSetter__("x", function(v) { print("and the value is:", v); });
+o.x = 123; // will print "and the value is: 123"
+//! [42]
+
+
+//! [49]
+var getProperty = function(name) { return this[name]; };
+
+name = "Global Object"; // creates a global variable
+print(getProperty("name")); // "Global Object"
+
+var myObject = { name: 'My Object' };
+print(getProperty.call(myObject, "name")); // "My Object"
+
+myObject.getProperty = getProperty;
+print(myObject.getProperty("name")); // "My Object"
+
+getProperty.name = "The getProperty() function";
+getProperty.getProperty = getProperty;
+getProperty.getProperty("name"); // "The getProperty() function"
+//! [49]
+
+//! [50]
+var o = { a: 1, b: 2, sum: function() { return a + b; } };
+print(o.sum()); // reference error, or sum of global variables a and b!!
+//! [50]
+
+//! [51]
+var o = { a: 1, b: 2, sum: function() { return this.a + this.b; } };
+print(o.sum()); // 3
+//! [51]
+
+//! [56]
+function add(a, b) {
+ return a + b;
+}
+//! [56]
+
+//! [57]
+function add() {
+ return arguments[0] + arguments[1];
+}
+//! [57]
+
+//! [59]
+function add() {
+ if (arguments.length != 2)
+ throw Error("add() takes exactly two arguments");
+ return arguments[0] + arguments[1];
+}
+//! [59]
+
+//! [60]
+function add() {
+ if (arguments.length != 2)
+ throw Error("add() takes exactly two arguments");
+ if (typeof arguments[0] != "number")
+ throw TypeError("add(): first argument is not a number");
+ if (typeof arguments[1] != "number")
+ throw TypeError("add(): second argument is not a number");
+ return arguments[0] + arguments[1];
+}
+//! [60]
+
+//! [61]
+function add() {
+ if (arguments.length != 2)
+ throw Error("add() takes exactly two arguments");
+ return Number(arguments[0]) + Number(arguments[1]);
+}
+//! [61]
+
+//! [64]
+function concat() {
+ var result = "";
+ for (var i = 0; i < arguments.length; ++i)
+ result += String(arguments[i]);
+ return result;
+}
+//! [64]
+
+//! [66]
+function sort(comparefn) {
+ if (comparefn == undefined)
+ comparefn = fn; /* replace fn with the built-in comparison function */
+ else if (typeof comparefn != "function")
+ throw TypeError("sort(): argument must be a function");
+ // ...
+}
+//! [66]
+
+//! [68]
+function foo() {
+ // Let bar() take care of this.
+ print("calling bar() with " + arguments.length + "arguments");
+ var result = bar.apply(this, arguments);
+ print("bar() returned" + result);
+ return result;
+}
+//! [68]
+
+//! [70]
+function counter() {
+ var count = 0;
+ return function() {
+ return count++;
+ }
+}
+//! [70]
+
+//! [71]
+var c1 = counter(); // create a new counter function
+var c2 = counter(); // create a new counter function
+print(c1()); // 0
+print(c1()); // 1
+print(c2()); // 0
+print(c2()); // 1
+//! [71]
+
+//! [75]
+function Book(isbn) {
+ this.isbn = isbn;
+}
+
+var coolBook1 = new Book("978-0131872493");
+var coolBook2 = new Book("978-1593271473");
+//! [75]
+
+//! [80]
+obj.x = "Roberta sent me";
+print(obj.x); // "Ken sent me"
+obj.x = "I sent the bill to Roberta";
+print(obj.x); // "I sent the bill to Ken"
+//! [80]
+
+//! [81]
+obj = {};
+obj.__defineGetter__("x", function() { return this._x; });
+obj.__defineSetter__("x", function(v) { print("setting x to", v); this._x = v; });
+obj.x = 123;
+//! [81]
+
+//! [82]
+myButton.text = qsTr("Hello world!");
+//! [82]
+
+//! [83]
+myButton.text = qsTranslate("MyAwesomeScript", "Hello world!");
+//! [83]
+
+//! [84]
+FriendlyConversation.prototype.greeting = function(type)
+{
+ if (FriendlyConversation['greeting_strings'] == undefined) {
+ FriendlyConversation['greeting_strings'] = [
+ QT_TR_NOOP("Hello"),
+ QT_TR_NOOP("Goodbye")
+ ];
+ }
+ return qsTr(FriendlyConversation.greeting_strings[type]);
+}
+//! [84]
+
+//! [85]
+FriendlyConversation.prototype.greeting = function(type)
+{
+ if (FriendlyConversation['greeting_strings'] == undefined) {
+ FriendlyConversation['greeting_strings'] = [
+ QT_TRANSLATE_NOOP("FriendlyConversation", "Hello"),
+ QT_TRANSLATE_NOOP("FriendlyConversation", "Goodbye")
+ ];
+ }
+ return qsTranslate("FriendlyConversation", FriendlyConversation.greeting_strings[type]);
+}
+//! [85]
+
+//! [86]
+FileCopier.prototype.showProgress = function(done, total, currentFileName)
+{
+ this.label.text = qsTr("%1 of %2 files copied.\nCopying: %3")
+ .arg(done)
+ .arg(total)
+ .arg(currentFileName);
+}
+//! [86]
+
+//! [90]
+({ unitName: "Celsius",
+ toKelvin: function(x) { return x + 273; }
+ })
+//! [90]