diff options
Diffstat (limited to 'static/bigpipe.js')
| -rwxr-xr-x | static/bigpipe.js | 244 |
1 files changed, 148 insertions, 96 deletions
diff --git a/static/bigpipe.js b/static/bigpipe.js index 5139483..3bf5809 100755 --- a/static/bigpipe.js +++ b/static/bigpipe.js @@ -2,18 +2,67 @@ // Revealing Module Pattern
//==============================================================================
var BigPipe = (function() {
+
+ //==============================================================================
+ // PhaseDoneJS object; responsible for Pagelet and Resource
+ //==============================================================================
+ var PhaseDoneJS = {
+ //==============================================================================
+ // PhaseDoneJS: Increases phase and executes callbacks
+ //==============================================================================
+ handler: function(context, phase) {
+ for(var currentPhase = context.phase; currentPhase <= phase; ++currentPhase) {
+ this.execute(context, currentPhase);
+ }
+
+ return context.phase = ++phase;
+ },
+
+ //==============================================================================
+ // PhaseDoneJS: Executes the callbacks of the given phase
+ //==============================================================================
+ execute: function(context, phase) {
+ context.phaseDoneJS[phase].forEach(function(code) {
+ try {
+ globalExecution(code);
+ } catch(e) {
+ console.error("PhaseDoneJS: " + e);
+ }
+ });
+ }
+ };
+
//==============================================================================
// Resource: Represents a single CSS or JS resource
//==============================================================================
- function Resource(resourceURL, type) {
+ function Resource(resourceURL, type, pageletID, phaseDoneJS) {
+ this.pageletID = pageletID;
this.resourceURL = resourceURL;
this.callbacks = [];
this.node = false;
this.done = false;
this.type = type;
+
+ this.phaseDoneJS = phaseDoneJS;
+ this.phase = 0;
+
+ PhaseDoneJS.handler(this, Resource.PHASE_INIT);
}
//==============================================================================
+ // Resource: Resource types
+ //==============================================================================
+ Resource.TYPE_STYLESHEET = 0;
+ Resource.TYPE_JAVASCRIPT = 1;
+
+ //==============================================================================
+ // Resource: Phase numbers for PhaseDoneJS
+ //==============================================================================
+ Resource.PHASE_INIT = 0;
+ Resource.PHASE_LOAD = 1;
+ Resource.PHASE_DONE = 2;
+
+ //==============================================================================
// Resource: Register a new callback
//==============================================================================
Resource.prototype.registerCallback = function(callback) {
@@ -24,9 +73,7 @@ var BigPipe = (function() { // Resource: Executes all registered callbacks
//==============================================================================
Resource.prototype.executeCallbacks = function() {
- if(!this.done) {
- this.done = true;
-
+ if(!this.done && (this.done = true)) {
this.callbacks.forEach(function(callback) {
callback();
});
@@ -37,29 +84,32 @@ var BigPipe = (function() { // Resource: Loading the resource
//==============================================================================
Resource.prototype.execute = function() {
- if(this.type === 0) {
- this.node = document.createElement('link');
- this.node.setAttribute('rel', 'stylesheet');
- this.node.setAttribute('href', this.resourceURL);
+ switch(this.type) {
+ case Resource.TYPE_STYLESHEET:
+ this.node = document.createElement('link');
+ this.node.setAttribute('rel', 'stylesheet');
+ this.node.setAttribute('href', this.resourceURL);
+ break;
+ case Resource.TYPE_JAVASCRIPT:
+ this.node = document.createElement('script');
+ this.node.setAttribute('src', this.resourceURL);
+ this.node.setAttribute('async', true);
+ break;
+ default:
+ return false;
}
- else {
- this.node = document.createElement('script');
- this.node.setAttribute('src', this.resourceURL);
- this.node.async = true;
- }
+ var callback = function() {
+ PhaseDoneJS.handler(this, Resource.PHASE_DONE);
+ this.executeCallbacks();
+ }.bind(this);
- this.node.setAttribute('class', 'bigpipe');
+ this.node.onload = callback;
+ this.node.onerror = callback;
document.head.appendChild(this.node);
- this.node.onload = function() {
- this.executeCallbacks();
- }.bind(this);
-
- this.node.onerror = function() {
- this.executeCallbacks();
- }.bind(this);
+ PhaseDoneJS.handler(this, Resource.PHASE_LOAD);
};
//==============================================================================
@@ -67,8 +117,8 @@ var BigPipe = (function() { //==============================================================================
Resource.prototype.abortLoading = function() {
if(this.node) {
- this.node.onload = function(){};
- this.node.onerror = function(){};
+ this.node.onload = null;
+ this.node.onerror = null;
// Remove element from DOM
var parentNode = this.node.parentNode;
@@ -80,84 +130,88 @@ var BigPipe = (function() { // Pagelet: Represents a single pagelet
//==============================================================================
function Pagelet(data, HTML) {
- this.pageletID = data.ID;
- this.HTML = HTML;
- this.CSSFiles = data.RESOURCES.CSS;
- this.JSFiles = data.RESOURCES.JS;
- this.JSCode = data.RESOURCES.JS_CODE;
- this.NEED = data.NEED;
+ this.ID = data.ID;
+ this.NEED = data.NEED;
+ this.HTML = HTML;
+ this.JSCode = data.CODE;
+ this.phaseDoneJS = data.PHASE;
+ this.stylesheets = data.RSRC[Resource.TYPE_STYLESHEET];
+ this.javascripts = data.RSRC[Resource.TYPE_JAVASCRIPT];
this.phase = 0;
- this.CSSResources = [];
- this.JSResources = [];
+ this.resources = [[], []];
- this.phaseDoneJS = data.PHASES;
-
- this.phaseDoneHandler(0);
+ PhaseDoneJS.handler(this, Pagelet.PHASE_INIT);
}
//==============================================================================
- // Pagelet: Increases phase and executes PhaseDoneJS
+ // Pagelet: Phase numbers for PhaseDoneJS
//==============================================================================
- Pagelet.prototype.phaseDoneHandler = function(phase) {
- for(var currentPhase = this.phase; currentPhase <= phase; ++currentPhase) {
- this.executePhaseDoneJS(currentPhase);
- }
-
- return (this.phase = ++phase);
- };
+ Pagelet.PHASE_INIT = 0;
+ Pagelet.PHASE_LOADCSS = 1;
+ Pagelet.PHASE_HTML = 2;
+ Pagelet.PHASE_LOADJS = 3;
+ Pagelet.PHASE_DONE = 4;
//==============================================================================
- // Pagelet: Executes the callbacks of the specific phase
+ // Pagelet: Initialize the pagelet resources
//==============================================================================
- Pagelet.prototype.executePhaseDoneJS = function(phase) {
- this.phaseDoneJS[phase].forEach(function(code) {
- try {
- globalExecution(code);
- } catch(e) {
- console.error("PhaseDoneJS: " + e);
- }
- });
+ Pagelet.prototype.initializeResources = function() {
+ var resourceURL;
+ var phaseDoneJS;
+
+ for(resourceURL in this.stylesheets) {
+ phaseDoneJS = this.stylesheets[resourceURL];
+ this.attachResource(new Resource(resourceURL, Resource.TYPE_STYLESHEET, this.ID, phaseDoneJS));
+ }
+
+ for(resourceURL in this.javascripts) {
+ phaseDoneJS = this.javascripts[resourceURL];
+ this.attachResource(new Resource(resourceURL, Resource.TYPE_JAVASCRIPT, this.ID, phaseDoneJS));
+ }
};
//==============================================================================
- // Pagelet: Initialize and execute the CSS resources
+ // Pagelet: Executes all resources of the specific type
//==============================================================================
- Pagelet.prototype.execute = function() {
- var isStarted = false;
-
- this.CSSFiles.forEach(function(resourceURL) {
- this.attachCSSResource(new Resource(resourceURL, 0));
- }.bind(this));
-
- this.JSFiles.forEach(function(resourceURL) {
- this.attachJSResource(new Resource(resourceURL, 1));
- }.bind(this));
+ Pagelet.prototype.executeResources = function(type) {
+ var somethingExecuted = false;
- this.CSSResources.forEach(function(resource) {
- isStarted = true;
+ this.resources[type].forEach(function(resource) {
+ somethingExecuted = true;
resource.execute();
}.bind(this));
- // If no CSS resource was started (= no external CSS resources exists), then begin to inject the HTML
- !isStarted && this.replaceHTML();
+ return somethingExecuted;
};
//==============================================================================
- // Pagelet: Attach a new CSS resource to the pagelet
+ // Pagelet: Initialize and execute the CSS resources
//==============================================================================
- Pagelet.prototype.attachCSSResource = function(resource) {
- resource.registerCallback(this.onloadCSS.bind(this));
- return this.CSSResources.push(resource);
+ Pagelet.prototype.execute = function() {
+ this.initializeResources();
+
+ if(!this.executeResources(Resource.TYPE_STYLESHEET)) {
+ this.replaceHTML();
+ }
};
//==============================================================================
- // Pagelet: Attach a new JS resource to the pagelet
+ // Pagelet: Attach a new resource to the pagelet
//==============================================================================
- Pagelet.prototype.attachJSResource = function(resource) {
- resource.registerCallback(this.onloadJS.bind(this));
- return this.JSResources.push(resource);
- };
+ Pagelet.prototype.attachResource = function(resource) {
+ switch(resource.type) {
+ case Resource.TYPE_STYLESHEET:
+ resource.registerCallback(this.onloadCSS.bind(this));
+ break;
+
+ case Resource.TYPE_JAVASCRIPT:
+ resource.registerCallback(this.onloadJS.bind(this));
+ break;
+ }
+
+ return this.resources[resource.type].push(resource);
+ }
//==============================================================================
// Pagelet: Executes the main JS code of the pagelet
@@ -167,20 +221,20 @@ var BigPipe = (function() { try {
globalExecution(code);
} catch(e) {
- console.error(this.pageletID + ": " + e);
+ console.error(this.ID + ": " + e);
}
});
- this.phaseDoneHandler(4);
+ PhaseDoneJS.handler(this, Pagelet.PHASE_DONE);
};
//==============================================================================
// Pagelet: Get each time called if a single JS resource has been loaded
//==============================================================================
Pagelet.prototype.onloadJS = function() {
- if(this.phase === 3 && this.JSResources.every(function(resource){
+ if(this.phase === 3 && this.resources[Resource.TYPE_JAVASCRIPT].every(function(resource){
return resource.done;
})) {
- this.phaseDoneHandler(3);
+ PhaseDoneJS.handler(this, Pagelet.PHASE_LOADJS);
this.executeJSCode();
}
};
@@ -189,30 +243,30 @@ var BigPipe = (function() { // Pagelet: Get each time called if a single CSS resource has been loaded
//==============================================================================
Pagelet.prototype.onloadCSS = function() {
- if(this.CSSResources.every(function(resource){
+ if(this.resources[Resource.TYPE_STYLESHEET].every(function(resource){
return resource.done;
})) {
- this.phaseDoneHandler(1);
+ PhaseDoneJS.handler(this, Pagelet.PHASE_LOADCSS);
this.replaceHTML();
}
};
//==============================================================================
- // Pagelet: Injects the HTML content into the DOM
+ // Pagelet: Replaces the placeholder node HTML
//==============================================================================
Pagelet.prototype.replaceHTML = function() {
- document.getElementById(this.pageletID).innerHTML = this.HTML;
+ document.getElementById(this.ID).innerHTML = this.HTML;
- this.phaseDoneHandler(2);
+ PhaseDoneJS.handler(this, Pagelet.PHASE_HTML);
- BigPipe.pageletHTMLreplaced(this.pageletID);
+ BigPipe.pageletHTMLreplaced(this.ID);
};
//==============================================================================
// BigPipe
//==============================================================================
var BigPipe = {
- pagelets: [],
+ pagelets: [],
phase: 0,
done: [],
wait: [],
@@ -226,7 +280,7 @@ var BigPipe = (function() { this.pagelets.push(pagelet);
- if(this.phase = 0) {
+ if(this.phase === 0) {
this.phase = 1;
}
@@ -262,7 +316,7 @@ var BigPipe = (function() { }
// Check if this was the last pagelet and then execute loading of the external JS resources
- if(BigPipe.phase === 2 && BigPipe.done.length === BigPipe.pagelets.length ) {
+ if(BigPipe.phase === 2 && BigPipe.done.length === BigPipe.pagelets.length) {
BigPipe.executeJSResources();
}
},
@@ -271,15 +325,9 @@ var BigPipe = (function() { this.phase = 3;
this.pagelets.forEach(function(pagelet) {
- if(pagelet.JSResources.length === 0) {
+ if(!pagelet.executeResources(Resource.TYPE_JAVASCRIPT)) {
pagelet.onloadJS();
}
-
- else {
- pagelet.JSResources.forEach(function(resource) {
- resource.execute();
- });
- }
});
}
};
@@ -294,7 +342,11 @@ var BigPipe = (function() { reset: function() {
BigPipe.pagelets.forEach(function(pagelet) {
- pagelet.CSSResources.concat(pagelet.JSResources).forEach(function(resource) {
+ pagelet.resources[Resource.TYPE_STYLESHEET].forEach(function(resource) {
+ resource.abortLoading();
+ });
+
+ pagelet.resources[Resource.TYPE_JAVASCRIPT].forEach(function(resource) {
resource.abortLoading();
});
});
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