1050 lines
30 KiB
JavaScript
1050 lines
30 KiB
JavaScript
define("dojo/_base/declare", ["./kernel", "../has", "./lang"], function(dojo, has, lang){
|
|
// module:
|
|
// dojo/_base/declare
|
|
// summary:
|
|
// This module defines dojo.declare.
|
|
|
|
var mix = lang.mixin, op = Object.prototype, opts = op.toString,
|
|
xtor = new Function, counter = 0, cname = "constructor";
|
|
|
|
function err(msg, cls){ throw new Error("declare" + (cls ? " " + cls : "") + ": " + msg); }
|
|
|
|
// C3 Method Resolution Order (see http://www.python.org/download/releases/2.3/mro/)
|
|
function c3mro(bases, className){
|
|
var result = [], roots = [{cls: 0, refs: []}], nameMap = {}, clsCount = 1,
|
|
l = bases.length, i = 0, j, lin, base, top, proto, rec, name, refs;
|
|
|
|
// build a list of bases naming them if needed
|
|
for(; i < l; ++i){
|
|
base = bases[i];
|
|
if(!base){
|
|
err("mixin #" + i + " is unknown. Did you use dojo.require to pull it in?", className);
|
|
}else if(opts.call(base) != "[object Function]"){
|
|
err("mixin #" + i + " is not a callable constructor.", className);
|
|
}
|
|
lin = base._meta ? base._meta.bases : [base];
|
|
top = 0;
|
|
// add bases to the name map
|
|
for(j = lin.length - 1; j >= 0; --j){
|
|
proto = lin[j].prototype;
|
|
if(!proto.hasOwnProperty("declaredClass")){
|
|
proto.declaredClass = "uniqName_" + (counter++);
|
|
}
|
|
name = proto.declaredClass;
|
|
if(!nameMap.hasOwnProperty(name)){
|
|
nameMap[name] = {count: 0, refs: [], cls: lin[j]};
|
|
++clsCount;
|
|
}
|
|
rec = nameMap[name];
|
|
if(top && top !== rec){
|
|
rec.refs.push(top);
|
|
++top.count;
|
|
}
|
|
top = rec;
|
|
}
|
|
++top.count;
|
|
roots[0].refs.push(top);
|
|
}
|
|
|
|
// remove classes without external references recursively
|
|
while(roots.length){
|
|
top = roots.pop();
|
|
result.push(top.cls);
|
|
--clsCount;
|
|
// optimization: follow a single-linked chain
|
|
while(refs = top.refs, refs.length == 1){
|
|
top = refs[0];
|
|
if(!top || --top.count){
|
|
// branch or end of chain => do not end to roots
|
|
top = 0;
|
|
break;
|
|
}
|
|
result.push(top.cls);
|
|
--clsCount;
|
|
}
|
|
if(top){
|
|
// branch
|
|
for(i = 0, l = refs.length; i < l; ++i){
|
|
top = refs[i];
|
|
if(!--top.count){
|
|
roots.push(top);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if(clsCount){
|
|
err("can't build consistent linearization", className);
|
|
}
|
|
|
|
// calculate the superclass offset
|
|
base = bases[0];
|
|
result[0] = base ?
|
|
base._meta && base === result[result.length - base._meta.bases.length] ?
|
|
base._meta.bases.length : 1 : 0;
|
|
|
|
return result;
|
|
}
|
|
|
|
function inherited(args, a, f){
|
|
var name, chains, bases, caller, meta, base, proto, opf, pos,
|
|
cache = this._inherited = this._inherited || {};
|
|
|
|
// crack arguments
|
|
if(typeof args == "string"){
|
|
name = args;
|
|
args = a;
|
|
a = f;
|
|
}
|
|
f = 0;
|
|
|
|
caller = args.callee;
|
|
name = name || caller.nom;
|
|
if(!name){
|
|
err("can't deduce a name to call inherited()", this.declaredClass);
|
|
}
|
|
|
|
meta = this.constructor._meta;
|
|
bases = meta.bases;
|
|
|
|
pos = cache.p;
|
|
if(name != cname){
|
|
// method
|
|
if(cache.c !== caller){
|
|
// cache bust
|
|
pos = 0;
|
|
base = bases[0];
|
|
meta = base._meta;
|
|
if(meta.hidden[name] !== caller){
|
|
// error detection
|
|
chains = meta.chains;
|
|
if(chains && typeof chains[name] == "string"){
|
|
err("calling chained method with inherited: " + name, this.declaredClass);
|
|
}
|
|
// find caller
|
|
do{
|
|
meta = base._meta;
|
|
proto = base.prototype;
|
|
if(meta && (proto[name] === caller && proto.hasOwnProperty(name) || meta.hidden[name] === caller)){
|
|
break;
|
|
}
|
|
}while(base = bases[++pos]); // intentional assignment
|
|
pos = base ? pos : -1;
|
|
}
|
|
}
|
|
// find next
|
|
base = bases[++pos];
|
|
if(base){
|
|
proto = base.prototype;
|
|
if(base._meta && proto.hasOwnProperty(name)){
|
|
f = proto[name];
|
|
}else{
|
|
opf = op[name];
|
|
do{
|
|
proto = base.prototype;
|
|
f = proto[name];
|
|
if(f && (base._meta ? proto.hasOwnProperty(name) : f !== opf)){
|
|
break;
|
|
}
|
|
}while(base = bases[++pos]); // intentional assignment
|
|
}
|
|
}
|
|
f = base && f || op[name];
|
|
}else{
|
|
// constructor
|
|
if(cache.c !== caller){
|
|
// cache bust
|
|
pos = 0;
|
|
meta = bases[0]._meta;
|
|
if(meta && meta.ctor !== caller){
|
|
// error detection
|
|
chains = meta.chains;
|
|
if(!chains || chains.constructor !== "manual"){
|
|
err("calling chained constructor with inherited", this.declaredClass);
|
|
}
|
|
// find caller
|
|
while(base = bases[++pos]){ // intentional assignment
|
|
meta = base._meta;
|
|
if(meta && meta.ctor === caller){
|
|
break;
|
|
}
|
|
}
|
|
pos = base ? pos : -1;
|
|
}
|
|
}
|
|
// find next
|
|
while(base = bases[++pos]){ // intentional assignment
|
|
meta = base._meta;
|
|
f = meta ? meta.ctor : base;
|
|
if(f){
|
|
break;
|
|
}
|
|
}
|
|
f = base && f;
|
|
}
|
|
|
|
// cache the found super method
|
|
cache.c = f;
|
|
cache.p = pos;
|
|
|
|
// now we have the result
|
|
if(f){
|
|
return a === true ? f : f.apply(this, a || args);
|
|
}
|
|
// intentionally no return if a super method was not found
|
|
}
|
|
|
|
function getInherited(name, args){
|
|
if(typeof name == "string"){
|
|
return this.__inherited(name, args, true);
|
|
}
|
|
return this.__inherited(name, true);
|
|
}
|
|
|
|
function inherited__debug(args, a1, a2){
|
|
var f = this.getInherited(args, a1);
|
|
if(f){ return f.apply(this, a2 || a1 || args); }
|
|
// intentionally no return if a super method was not found
|
|
}
|
|
|
|
var inheritedImpl = dojo.config.isDebug ? inherited__debug : inherited;
|
|
|
|
// emulation of "instanceof"
|
|
function isInstanceOf(cls){
|
|
var bases = this.constructor._meta.bases;
|
|
for(var i = 0, l = bases.length; i < l; ++i){
|
|
if(bases[i] === cls){
|
|
return true;
|
|
}
|
|
}
|
|
return this instanceof cls;
|
|
}
|
|
|
|
function mixOwn(target, source){
|
|
// add props adding metadata for incoming functions skipping a constructor
|
|
for(var name in source){
|
|
if(name != cname && source.hasOwnProperty(name)){
|
|
target[name] = source[name];
|
|
}
|
|
}
|
|
if(has("bug-for-in-skips-shadowed")){
|
|
for(var extraNames= lang._extraNames, i= extraNames.length; i;){
|
|
name = extraNames[--i];
|
|
if(name != cname && source.hasOwnProperty(name)){
|
|
target[name] = source[name];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// implementation of safe mixin function
|
|
function safeMixin(target, source){
|
|
var name, t;
|
|
// add props adding metadata for incoming functions skipping a constructor
|
|
for(name in source){
|
|
t = source[name];
|
|
if((t !== op[name] || !(name in op)) && name != cname){
|
|
if(opts.call(t) == "[object Function]"){
|
|
// non-trivial function method => attach its name
|
|
t.nom = name;
|
|
}
|
|
target[name] = t;
|
|
}
|
|
}
|
|
if(has("bug-for-in-skips-shadowed")){
|
|
for(var extraNames= lang._extraNames, i= extraNames.length; i;){
|
|
name = extraNames[--i];
|
|
t = source[name];
|
|
if((t !== op[name] || !(name in op)) && name != cname){
|
|
if(opts.call(t) == "[object Function]"){
|
|
// non-trivial function method => attach its name
|
|
t.nom = name;
|
|
}
|
|
target[name] = t;
|
|
}
|
|
}
|
|
}
|
|
return target;
|
|
}
|
|
|
|
function extend(source){
|
|
declare.safeMixin(this.prototype, source);
|
|
return this;
|
|
}
|
|
|
|
// chained constructor compatible with the legacy dojo.declare()
|
|
function chainedConstructor(bases, ctorSpecial){
|
|
return function(){
|
|
var a = arguments, args = a, a0 = a[0], f, i, m,
|
|
l = bases.length, preArgs;
|
|
|
|
if(!(this instanceof a.callee)){
|
|
// not called via new, so force it
|
|
return applyNew(a);
|
|
}
|
|
|
|
//this._inherited = {};
|
|
// perform the shaman's rituals of the original dojo.declare()
|
|
// 1) call two types of the preamble
|
|
if(ctorSpecial && (a0 && a0.preamble || this.preamble)){
|
|
// full blown ritual
|
|
preArgs = new Array(bases.length);
|
|
// prepare parameters
|
|
preArgs[0] = a;
|
|
for(i = 0;;){
|
|
// process the preamble of the 1st argument
|
|
a0 = a[0];
|
|
if(a0){
|
|
f = a0.preamble;
|
|
if(f){
|
|
a = f.apply(this, a) || a;
|
|
}
|
|
}
|
|
// process the preamble of this class
|
|
f = bases[i].prototype;
|
|
f = f.hasOwnProperty("preamble") && f.preamble;
|
|
if(f){
|
|
a = f.apply(this, a) || a;
|
|
}
|
|
// one peculiarity of the preamble:
|
|
// it is called if it is not needed,
|
|
// e.g., there is no constructor to call
|
|
// let's watch for the last constructor
|
|
// (see ticket #9795)
|
|
if(++i == l){
|
|
break;
|
|
}
|
|
preArgs[i] = a;
|
|
}
|
|
}
|
|
// 2) call all non-trivial constructors using prepared arguments
|
|
for(i = l - 1; i >= 0; --i){
|
|
f = bases[i];
|
|
m = f._meta;
|
|
f = m ? m.ctor : f;
|
|
if(f){
|
|
f.apply(this, preArgs ? preArgs[i] : a);
|
|
}
|
|
}
|
|
// 3) continue the original ritual: call the postscript
|
|
f = this.postscript;
|
|
if(f){
|
|
f.apply(this, args);
|
|
}
|
|
};
|
|
}
|
|
|
|
|
|
// chained constructor compatible with the legacy dojo.declare()
|
|
function singleConstructor(ctor, ctorSpecial){
|
|
return function(){
|
|
var a = arguments, t = a, a0 = a[0], f;
|
|
|
|
if(!(this instanceof a.callee)){
|
|
// not called via new, so force it
|
|
return applyNew(a);
|
|
}
|
|
|
|
//this._inherited = {};
|
|
// perform the shaman's rituals of the original dojo.declare()
|
|
// 1) call two types of the preamble
|
|
if(ctorSpecial){
|
|
// full blown ritual
|
|
if(a0){
|
|
// process the preamble of the 1st argument
|
|
f = a0.preamble;
|
|
if(f){
|
|
t = f.apply(this, t) || t;
|
|
}
|
|
}
|
|
f = this.preamble;
|
|
if(f){
|
|
// process the preamble of this class
|
|
f.apply(this, t);
|
|
// one peculiarity of the preamble:
|
|
// it is called even if it is not needed,
|
|
// e.g., there is no constructor to call
|
|
// let's watch for the last constructor
|
|
// (see ticket #9795)
|
|
}
|
|
}
|
|
// 2) call a constructor
|
|
if(ctor){
|
|
ctor.apply(this, a);
|
|
}
|
|
// 3) continue the original ritual: call the postscript
|
|
f = this.postscript;
|
|
if(f){
|
|
f.apply(this, a);
|
|
}
|
|
};
|
|
}
|
|
|
|
// plain vanilla constructor (can use inherited() to call its base constructor)
|
|
function simpleConstructor(bases){
|
|
return function(){
|
|
var a = arguments, i = 0, f, m;
|
|
|
|
if(!(this instanceof a.callee)){
|
|
// not called via new, so force it
|
|
return applyNew(a);
|
|
}
|
|
|
|
//this._inherited = {};
|
|
// perform the shaman's rituals of the original dojo.declare()
|
|
// 1) do not call the preamble
|
|
// 2) call the top constructor (it can use this.inherited())
|
|
for(; f = bases[i]; ++i){ // intentional assignment
|
|
m = f._meta;
|
|
f = m ? m.ctor : f;
|
|
if(f){
|
|
f.apply(this, a);
|
|
break;
|
|
}
|
|
}
|
|
// 3) call the postscript
|
|
f = this.postscript;
|
|
if(f){
|
|
f.apply(this, a);
|
|
}
|
|
};
|
|
}
|
|
|
|
function chain(name, bases, reversed){
|
|
return function(){
|
|
var b, m, f, i = 0, step = 1;
|
|
if(reversed){
|
|
i = bases.length - 1;
|
|
step = -1;
|
|
}
|
|
for(; b = bases[i]; i += step){ // intentional assignment
|
|
m = b._meta;
|
|
f = (m ? m.hidden : b.prototype)[name];
|
|
if(f){
|
|
f.apply(this, arguments);
|
|
}
|
|
}
|
|
};
|
|
}
|
|
|
|
// forceNew(ctor)
|
|
// return a new object that inherits from ctor.prototype but
|
|
// without actually running ctor on the object.
|
|
function forceNew(ctor){
|
|
// create object with correct prototype using a do-nothing
|
|
// constructor
|
|
xtor.prototype = ctor.prototype;
|
|
var t = new xtor;
|
|
xtor.prototype = null; // clean up
|
|
return t;
|
|
}
|
|
|
|
// applyNew(args)
|
|
// just like 'new ctor()' except that the constructor and its arguments come
|
|
// from args, which must be an array or an arguments object
|
|
function applyNew(args){
|
|
// create an object with ctor's prototype but without
|
|
// calling ctor on it.
|
|
var ctor = args.callee, t = forceNew(ctor);
|
|
// execute the real constructor on the new object
|
|
ctor.apply(t, args);
|
|
return t;
|
|
}
|
|
|
|
function declare(className, superclass, props){
|
|
// crack parameters
|
|
if(typeof className != "string"){
|
|
props = superclass;
|
|
superclass = className;
|
|
className = "";
|
|
}
|
|
props = props || {};
|
|
|
|
var proto, i, t, ctor, name, bases, chains, mixins = 1, parents = superclass;
|
|
|
|
// build a prototype
|
|
if(opts.call(superclass) == "[object Array]"){
|
|
// C3 MRO
|
|
bases = c3mro(superclass, className);
|
|
t = bases[0];
|
|
mixins = bases.length - t;
|
|
superclass = bases[mixins];
|
|
}else{
|
|
bases = [0];
|
|
if(superclass){
|
|
if(opts.call(superclass) == "[object Function]"){
|
|
t = superclass._meta;
|
|
bases = bases.concat(t ? t.bases : superclass);
|
|
}else{
|
|
err("base class is not a callable constructor.", className);
|
|
}
|
|
}else if(superclass !== null){
|
|
err("unknown base class. Did you use dojo.require to pull it in?", className);
|
|
}
|
|
}
|
|
if(superclass){
|
|
for(i = mixins - 1;; --i){
|
|
proto = forceNew(superclass);
|
|
if(!i){
|
|
// stop if nothing to add (the last base)
|
|
break;
|
|
}
|
|
// mix in properties
|
|
t = bases[i];
|
|
(t._meta ? mixOwn : mix)(proto, t.prototype);
|
|
// chain in new constructor
|
|
ctor = new Function;
|
|
ctor.superclass = superclass;
|
|
ctor.prototype = proto;
|
|
superclass = proto.constructor = ctor;
|
|
}
|
|
}else{
|
|
proto = {};
|
|
}
|
|
// add all properties
|
|
declare.safeMixin(proto, props);
|
|
// add constructor
|
|
t = props.constructor;
|
|
if(t !== op.constructor){
|
|
t.nom = cname;
|
|
proto.constructor = t;
|
|
}
|
|
|
|
// collect chains and flags
|
|
for(i = mixins - 1; i; --i){ // intentional assignment
|
|
t = bases[i]._meta;
|
|
if(t && t.chains){
|
|
chains = mix(chains || {}, t.chains);
|
|
}
|
|
}
|
|
if(proto["-chains-"]){
|
|
chains = mix(chains || {}, proto["-chains-"]);
|
|
}
|
|
|
|
// build ctor
|
|
t = !chains || !chains.hasOwnProperty(cname);
|
|
bases[0] = ctor = (chains && chains.constructor === "manual") ? simpleConstructor(bases) :
|
|
(bases.length == 1 ? singleConstructor(props.constructor, t) : chainedConstructor(bases, t));
|
|
|
|
// add meta information to the constructor
|
|
ctor._meta = {bases: bases, hidden: props, chains: chains,
|
|
parents: parents, ctor: props.constructor};
|
|
ctor.superclass = superclass && superclass.prototype;
|
|
ctor.extend = extend;
|
|
ctor.prototype = proto;
|
|
proto.constructor = ctor;
|
|
|
|
// add "standard" methods to the prototype
|
|
proto.getInherited = getInherited;
|
|
proto.isInstanceOf = isInstanceOf;
|
|
proto.inherited = inheritedImpl;
|
|
proto.__inherited = inherited;
|
|
|
|
// add name if specified
|
|
if(className){
|
|
proto.declaredClass = className;
|
|
lang.setObject(className, ctor);
|
|
}
|
|
|
|
// build chains and add them to the prototype
|
|
if(chains){
|
|
for(name in chains){
|
|
if(proto[name] && typeof chains[name] == "string" && name != cname){
|
|
t = proto[name] = chain(name, bases, chains[name] === "after");
|
|
t.nom = name;
|
|
}
|
|
}
|
|
}
|
|
// chained methods do not return values
|
|
// no need to chain "invisible" functions
|
|
|
|
return ctor; // Function
|
|
}
|
|
|
|
/*=====
|
|
dojo.declare = function(className, superclass, props){
|
|
// summary:
|
|
// Create a feature-rich constructor from compact notation.
|
|
// className: String?:
|
|
// The optional name of the constructor (loosely, a "class")
|
|
// stored in the "declaredClass" property in the created prototype.
|
|
// It will be used as a global name for a created constructor.
|
|
// superclass: Function|Function[]:
|
|
// May be null, a Function, or an Array of Functions. This argument
|
|
// specifies a list of bases (the left-most one is the most deepest
|
|
// base).
|
|
// props: Object:
|
|
// An object whose properties are copied to the created prototype.
|
|
// Add an instance-initialization function by making it a property
|
|
// named "constructor".
|
|
// returns:
|
|
// New constructor function.
|
|
// description:
|
|
// Create a constructor using a compact notation for inheritance and
|
|
// prototype extension.
|
|
//
|
|
// Mixin ancestors provide a type of multiple inheritance.
|
|
// Prototypes of mixin ancestors are copied to the new class:
|
|
// changes to mixin prototypes will not affect classes to which
|
|
// they have been mixed in.
|
|
//
|
|
// Ancestors can be compound classes created by this version of
|
|
// dojo.declare. In complex cases all base classes are going to be
|
|
// linearized according to C3 MRO algorithm
|
|
// (see http://www.python.org/download/releases/2.3/mro/ for more
|
|
// details).
|
|
//
|
|
// "className" is cached in "declaredClass" property of the new class,
|
|
// if it was supplied. The immediate super class will be cached in
|
|
// "superclass" property of the new class.
|
|
//
|
|
// Methods in "props" will be copied and modified: "nom" property
|
|
// (the declared name of the method) will be added to all copied
|
|
// functions to help identify them for the internal machinery. Be
|
|
// very careful, while reusing methods: if you use the same
|
|
// function under different names, it can produce errors in some
|
|
// cases.
|
|
//
|
|
// It is possible to use constructors created "manually" (without
|
|
// dojo.declare) as bases. They will be called as usual during the
|
|
// creation of an instance, their methods will be chained, and even
|
|
// called by "this.inherited()".
|
|
//
|
|
// Special property "-chains-" governs how to chain methods. It is
|
|
// a dictionary, which uses method names as keys, and hint strings
|
|
// as values. If a hint string is "after", this method will be
|
|
// called after methods of its base classes. If a hint string is
|
|
// "before", this method will be called before methods of its base
|
|
// classes.
|
|
//
|
|
// If "constructor" is not mentioned in "-chains-" property, it will
|
|
// be chained using the legacy mode: using "after" chaining,
|
|
// calling preamble() method before each constructor, if available,
|
|
// and calling postscript() after all constructors were executed.
|
|
// If the hint is "after", it is chained as a regular method, but
|
|
// postscript() will be called after the chain of constructors.
|
|
// "constructor" cannot be chained "before", but it allows
|
|
// a special hint string: "manual", which means that constructors
|
|
// are not going to be chained in any way, and programmer will call
|
|
// them manually using this.inherited(). In the latter case
|
|
// postscript() will be called after the construction.
|
|
//
|
|
// All chaining hints are "inherited" from base classes and
|
|
// potentially can be overridden. Be very careful when overriding
|
|
// hints! Make sure that all chained methods can work in a proposed
|
|
// manner of chaining.
|
|
//
|
|
// Once a method was chained, it is impossible to unchain it. The
|
|
// only exception is "constructor". You don't need to define a
|
|
// method in order to supply a chaining hint.
|
|
//
|
|
// If a method is chained, it cannot use this.inherited() because
|
|
// all other methods in the hierarchy will be called automatically.
|
|
//
|
|
// Usually constructors and initializers of any kind are chained
|
|
// using "after" and destructors of any kind are chained as
|
|
// "before". Note that chaining assumes that chained methods do not
|
|
// return any value: any returned value will be discarded.
|
|
//
|
|
// example:
|
|
// | dojo.declare("my.classes.bar", my.classes.foo, {
|
|
// | // properties to be added to the class prototype
|
|
// | someValue: 2,
|
|
// | // initialization function
|
|
// | constructor: function(){
|
|
// | this.myComplicatedObject = new ReallyComplicatedObject();
|
|
// | },
|
|
// | // other functions
|
|
// | someMethod: function(){
|
|
// | doStuff();
|
|
// | }
|
|
// | });
|
|
//
|
|
// example:
|
|
// | var MyBase = dojo.declare(null, {
|
|
// | // constructor, properties, and methods go here
|
|
// | // ...
|
|
// | });
|
|
// | var MyClass1 = dojo.declare(MyBase, {
|
|
// | // constructor, properties, and methods go here
|
|
// | // ...
|
|
// | });
|
|
// | var MyClass2 = dojo.declare(MyBase, {
|
|
// | // constructor, properties, and methods go here
|
|
// | // ...
|
|
// | });
|
|
// | var MyDiamond = dojo.declare([MyClass1, MyClass2], {
|
|
// | // constructor, properties, and methods go here
|
|
// | // ...
|
|
// | });
|
|
//
|
|
// example:
|
|
// | var F = function(){ console.log("raw constructor"); };
|
|
// | F.prototype.method = function(){
|
|
// | console.log("raw method");
|
|
// | };
|
|
// | var A = dojo.declare(F, {
|
|
// | constructor: function(){
|
|
// | console.log("A.constructor");
|
|
// | },
|
|
// | method: function(){
|
|
// | console.log("before calling F.method...");
|
|
// | this.inherited(arguments);
|
|
// | console.log("...back in A");
|
|
// | }
|
|
// | });
|
|
// | new A().method();
|
|
// | // will print:
|
|
// | // raw constructor
|
|
// | // A.constructor
|
|
// | // before calling F.method...
|
|
// | // raw method
|
|
// | // ...back in A
|
|
//
|
|
// example:
|
|
// | var A = dojo.declare(null, {
|
|
// | "-chains-": {
|
|
// | destroy: "before"
|
|
// | }
|
|
// | });
|
|
// | var B = dojo.declare(A, {
|
|
// | constructor: function(){
|
|
// | console.log("B.constructor");
|
|
// | },
|
|
// | destroy: function(){
|
|
// | console.log("B.destroy");
|
|
// | }
|
|
// | });
|
|
// | var C = dojo.declare(B, {
|
|
// | constructor: function(){
|
|
// | console.log("C.constructor");
|
|
// | },
|
|
// | destroy: function(){
|
|
// | console.log("C.destroy");
|
|
// | }
|
|
// | });
|
|
// | new C().destroy();
|
|
// | // prints:
|
|
// | // B.constructor
|
|
// | // C.constructor
|
|
// | // C.destroy
|
|
// | // B.destroy
|
|
//
|
|
// example:
|
|
// | var A = dojo.declare(null, {
|
|
// | "-chains-": {
|
|
// | constructor: "manual"
|
|
// | }
|
|
// | });
|
|
// | var B = dojo.declare(A, {
|
|
// | constructor: function(){
|
|
// | // ...
|
|
// | // call the base constructor with new parameters
|
|
// | this.inherited(arguments, [1, 2, 3]);
|
|
// | // ...
|
|
// | }
|
|
// | });
|
|
//
|
|
// example:
|
|
// | var A = dojo.declare(null, {
|
|
// | "-chains-": {
|
|
// | m1: "before"
|
|
// | },
|
|
// | m1: function(){
|
|
// | console.log("A.m1");
|
|
// | },
|
|
// | m2: function(){
|
|
// | console.log("A.m2");
|
|
// | }
|
|
// | });
|
|
// | var B = dojo.declare(A, {
|
|
// | "-chains-": {
|
|
// | m2: "after"
|
|
// | },
|
|
// | m1: function(){
|
|
// | console.log("B.m1");
|
|
// | },
|
|
// | m2: function(){
|
|
// | console.log("B.m2");
|
|
// | }
|
|
// | });
|
|
// | var x = new B();
|
|
// | x.m1();
|
|
// | // prints:
|
|
// | // B.m1
|
|
// | // A.m1
|
|
// | x.m2();
|
|
// | // prints:
|
|
// | // A.m2
|
|
// | // B.m2
|
|
return new Function(); // Function
|
|
};
|
|
=====*/
|
|
|
|
/*=====
|
|
dojo.safeMixin = function(target, source){
|
|
// summary:
|
|
// Mix in properties skipping a constructor and decorating functions
|
|
// like it is done by dojo.declare.
|
|
// target: Object
|
|
// Target object to accept new properties.
|
|
// source: Object
|
|
// Source object for new properties.
|
|
// description:
|
|
// This function is used to mix in properties like lang.mixin does,
|
|
// but it skips a constructor property and decorates functions like
|
|
// dojo.declare does.
|
|
//
|
|
// It is meant to be used with classes and objects produced with
|
|
// dojo.declare. Functions mixed in with dojo.safeMixin can use
|
|
// this.inherited() like normal methods.
|
|
//
|
|
// This function is used to implement extend() method of a constructor
|
|
// produced with dojo.declare().
|
|
//
|
|
// example:
|
|
// | var A = dojo.declare(null, {
|
|
// | m1: function(){
|
|
// | console.log("A.m1");
|
|
// | },
|
|
// | m2: function(){
|
|
// | console.log("A.m2");
|
|
// | }
|
|
// | });
|
|
// | var B = dojo.declare(A, {
|
|
// | m1: function(){
|
|
// | this.inherited(arguments);
|
|
// | console.log("B.m1");
|
|
// | }
|
|
// | });
|
|
// | B.extend({
|
|
// | m2: function(){
|
|
// | this.inherited(arguments);
|
|
// | console.log("B.m2");
|
|
// | }
|
|
// | });
|
|
// | var x = new B();
|
|
// | dojo.safeMixin(x, {
|
|
// | m1: function(){
|
|
// | this.inherited(arguments);
|
|
// | console.log("X.m1");
|
|
// | },
|
|
// | m2: function(){
|
|
// | this.inherited(arguments);
|
|
// | console.log("X.m2");
|
|
// | }
|
|
// | });
|
|
// | x.m2();
|
|
// | // prints:
|
|
// | // A.m1
|
|
// | // B.m1
|
|
// | // X.m1
|
|
};
|
|
=====*/
|
|
|
|
/*=====
|
|
Object.inherited = function(name, args, newArgs){
|
|
// summary:
|
|
// Calls a super method.
|
|
// name: String?
|
|
// The optional method name. Should be the same as the caller's
|
|
// name. Usually "name" is specified in complex dynamic cases, when
|
|
// the calling method was dynamically added, undecorated by
|
|
// dojo.declare, and it cannot be determined.
|
|
// args: Arguments
|
|
// The caller supply this argument, which should be the original
|
|
// "arguments".
|
|
// newArgs: Object?
|
|
// If "true", the found function will be returned without
|
|
// executing it.
|
|
// If Array, it will be used to call a super method. Otherwise
|
|
// "args" will be used.
|
|
// returns:
|
|
// Whatever is returned by a super method, or a super method itself,
|
|
// if "true" was specified as newArgs.
|
|
// description:
|
|
// This method is used inside method of classes produced with
|
|
// dojo.declare to call a super method (next in the chain). It is
|
|
// used for manually controlled chaining. Consider using the regular
|
|
// chaining, because it is faster. Use "this.inherited()" only in
|
|
// complex cases.
|
|
//
|
|
// This method cannot me called from automatically chained
|
|
// constructors including the case of a special (legacy)
|
|
// constructor chaining. It cannot be called from chained methods.
|
|
//
|
|
// If "this.inherited()" cannot find the next-in-chain method, it
|
|
// does nothing and returns "undefined". The last method in chain
|
|
// can be a default method implemented in Object, which will be
|
|
// called last.
|
|
//
|
|
// If "name" is specified, it is assumed that the method that
|
|
// received "args" is the parent method for this call. It is looked
|
|
// up in the chain list and if it is found the next-in-chain method
|
|
// is called. If it is not found, the first-in-chain method is
|
|
// called.
|
|
//
|
|
// If "name" is not specified, it will be derived from the calling
|
|
// method (using a methoid property "nom").
|
|
//
|
|
// example:
|
|
// | var B = dojo.declare(A, {
|
|
// | method1: function(a, b, c){
|
|
// | this.inherited(arguments);
|
|
// | },
|
|
// | method2: function(a, b){
|
|
// | return this.inherited(arguments, [a + b]);
|
|
// | }
|
|
// | });
|
|
// | // next method is not in the chain list because it is added
|
|
// | // manually after the class was created.
|
|
// | B.prototype.method3 = function(){
|
|
// | console.log("This is a dynamically-added method.");
|
|
// | this.inherited("method3", arguments);
|
|
// | };
|
|
// example:
|
|
// | var B = dojo.declare(A, {
|
|
// | method: function(a, b){
|
|
// | var super = this.inherited(arguments, true);
|
|
// | // ...
|
|
// | if(!super){
|
|
// | console.log("there is no super method");
|
|
// | return 0;
|
|
// | }
|
|
// | return super.apply(this, arguments);
|
|
// | }
|
|
// | });
|
|
return {}; // Object
|
|
}
|
|
=====*/
|
|
|
|
/*=====
|
|
Object.getInherited = function(name, args){
|
|
// summary:
|
|
// Returns a super method.
|
|
// name: String?
|
|
// The optional method name. Should be the same as the caller's
|
|
// name. Usually "name" is specified in complex dynamic cases, when
|
|
// the calling method was dynamically added, undecorated by
|
|
// dojo.declare, and it cannot be determined.
|
|
// args: Arguments
|
|
// The caller supply this argument, which should be the original
|
|
// "arguments".
|
|
// returns:
|
|
// Returns a super method (Function) or "undefined".
|
|
// description:
|
|
// This method is a convenience method for "this.inherited()".
|
|
// It uses the same algorithm but instead of executing a super
|
|
// method, it returns it, or "undefined" if not found.
|
|
//
|
|
// example:
|
|
// | var B = dojo.declare(A, {
|
|
// | method: function(a, b){
|
|
// | var super = this.getInherited(arguments);
|
|
// | // ...
|
|
// | if(!super){
|
|
// | console.log("there is no super method");
|
|
// | return 0;
|
|
// | }
|
|
// | return super.apply(this, arguments);
|
|
// | }
|
|
// | });
|
|
return {}; // Object
|
|
}
|
|
=====*/
|
|
|
|
/*=====
|
|
Object.isInstanceOf = function(cls){
|
|
// summary:
|
|
// Checks the inheritance chain to see if it is inherited from this
|
|
// class.
|
|
// cls: Function
|
|
// Class constructor.
|
|
// returns:
|
|
// "true", if this object is inherited from this class, "false"
|
|
// otherwise.
|
|
// description:
|
|
// This method is used with instances of classes produced with
|
|
// dojo.declare to determine of they support a certain interface or
|
|
// not. It models "instanceof" operator.
|
|
//
|
|
// example:
|
|
// | var A = dojo.declare(null, {
|
|
// | // constructor, properties, and methods go here
|
|
// | // ...
|
|
// | });
|
|
// | var B = dojo.declare(null, {
|
|
// | // constructor, properties, and methods go here
|
|
// | // ...
|
|
// | });
|
|
// | var C = dojo.declare([A, B], {
|
|
// | // constructor, properties, and methods go here
|
|
// | // ...
|
|
// | });
|
|
// | var D = dojo.declare(A, {
|
|
// | // constructor, properties, and methods go here
|
|
// | // ...
|
|
// | });
|
|
// |
|
|
// | var a = new A(), b = new B(), c = new C(), d = new D();
|
|
// |
|
|
// | console.log(a.isInstanceOf(A)); // true
|
|
// | console.log(b.isInstanceOf(A)); // false
|
|
// | console.log(c.isInstanceOf(A)); // true
|
|
// | console.log(d.isInstanceOf(A)); // true
|
|
// |
|
|
// | console.log(a.isInstanceOf(B)); // false
|
|
// | console.log(b.isInstanceOf(B)); // true
|
|
// | console.log(c.isInstanceOf(B)); // true
|
|
// | console.log(d.isInstanceOf(B)); // false
|
|
// |
|
|
// | console.log(a.isInstanceOf(C)); // false
|
|
// | console.log(b.isInstanceOf(C)); // false
|
|
// | console.log(c.isInstanceOf(C)); // true
|
|
// | console.log(d.isInstanceOf(C)); // false
|
|
// |
|
|
// | console.log(a.isInstanceOf(D)); // false
|
|
// | console.log(b.isInstanceOf(D)); // false
|
|
// | console.log(c.isInstanceOf(D)); // false
|
|
// | console.log(d.isInstanceOf(D)); // true
|
|
return {}; // Object
|
|
}
|
|
=====*/
|
|
|
|
/*=====
|
|
Object.extend = function(source){
|
|
// summary:
|
|
// Adds all properties and methods of source to constructor's
|
|
// prototype, making them available to all instances created with
|
|
// constructor. This method is specific to constructors created with
|
|
// dojo.declare.
|
|
// source: Object
|
|
// Source object which properties are going to be copied to the
|
|
// constructor's prototype.
|
|
// description:
|
|
// Adds source properties to the constructor's prototype. It can
|
|
// override existing properties.
|
|
//
|
|
// This method is similar to dojo.extend function, but it is specific
|
|
// to constructors produced by dojo.declare. It is implemented
|
|
// using dojo.safeMixin, and it skips a constructor property,
|
|
// and properly decorates copied functions.
|
|
//
|
|
// example:
|
|
// | var A = dojo.declare(null, {
|
|
// | m1: function(){},
|
|
// | s1: "Popokatepetl"
|
|
// | });
|
|
// | A.extend({
|
|
// | m1: function(){},
|
|
// | m2: function(){},
|
|
// | f1: true,
|
|
// | d1: 42
|
|
// | });
|
|
};
|
|
=====*/
|
|
|
|
dojo.safeMixin = declare.safeMixin = safeMixin;
|
|
dojo.declare = declare;
|
|
|
|
return declare;
|
|
});
|