123 lines
No EOL
2.7 KiB
JavaScript
123 lines
No EOL
2.7 KiB
JavaScript
// Copyright (c) 2013, Web Notes Technologies Pvt. Ltd. and Contributors
|
|
// MIT License. See license.txt
|
|
|
|
// library to mange assets (js, css, models, html) etc in the app.
|
|
// will try and get from localStorge if latest are available
|
|
// depends on wn.versions to manage versioning
|
|
|
|
wn.require = function(items) {
|
|
if(typeof items === "string") {
|
|
items = [items];
|
|
}
|
|
var l = items.length;
|
|
|
|
for(var i=0; i< l; i++) {
|
|
var src = items[i];
|
|
wn.assets.execute(src);
|
|
}
|
|
};
|
|
|
|
wn.assets = {
|
|
// keep track of executed assets
|
|
executed_ : {},
|
|
|
|
check: function() {
|
|
// if version is different then clear localstorage
|
|
if(window._version_number != localStorage.getItem("_version_number")) {
|
|
localStorage.clear();
|
|
console.log("Cleared App Cache.");
|
|
}
|
|
|
|
if(localStorage._last_load) {
|
|
var not_updated_since = new Date() - new Date(localStorage._last_load);
|
|
if(not_updated_since < 10000 || not_updated_since > 86400000) {
|
|
localStorage.clear();
|
|
console.log("Cleared localstorage");
|
|
}
|
|
} else {
|
|
localStorage.clear();
|
|
console.log("Cleared localstorage");
|
|
}
|
|
localStorage._last_load = new Date();
|
|
localStorage._version_number = window._version_number;
|
|
},
|
|
|
|
// check if the asset exists in
|
|
// localstorage
|
|
exists: function(src) {
|
|
if('localStorage' in window
|
|
&& localStorage.getItem(src) && (wn.boot ? !wn.boot.developer_mode : true))
|
|
return true;
|
|
},
|
|
|
|
// add the asset to
|
|
// localstorage
|
|
add: function(src, txt) {
|
|
if('localStorage' in window) {
|
|
try {
|
|
localStorage.setItem(src, txt);
|
|
} catch(e) {
|
|
// if quota is exceeded, clear local storage and set item
|
|
localStorage.clear();
|
|
console.log("Local Storage cleared");
|
|
|
|
localStorage.setItem(src, txt);
|
|
}
|
|
}
|
|
},
|
|
|
|
get: function(src) {
|
|
return localStorage.getItem(src);
|
|
},
|
|
|
|
extn: function(src) {
|
|
if(src.indexOf('?')!=-1) {
|
|
src = src.split('?').slice(-1)[0];
|
|
}
|
|
return src.split('.').slice(-1)[0];
|
|
},
|
|
|
|
// load an asset via
|
|
load: function(src) {
|
|
// this is virtual page load, only get the the source
|
|
// *without* the template
|
|
wn.set_loading();
|
|
|
|
wn.call({
|
|
method:"webnotes.client.get_js",
|
|
args: {
|
|
"src": src
|
|
},
|
|
callback: function(r) {
|
|
wn.assets.add(src, r.message);
|
|
},
|
|
async: false
|
|
})
|
|
|
|
wn.done_loading();
|
|
},
|
|
|
|
// pass on to the handler to set
|
|
execute: function(src) {
|
|
if(!wn.assets.exists(src)) {
|
|
wn.assets.load(src);
|
|
}
|
|
var type = wn.assets.extn(src);
|
|
if(wn.assets.handler[type]) {
|
|
wn.assets.handler[type](wn.assets.get(src), src);
|
|
wn.assets.executed_[src] = 1;
|
|
}
|
|
},
|
|
|
|
// handle types of assets
|
|
// and launch them in the
|
|
// app
|
|
handler: {
|
|
js: function(txt, src) {
|
|
wn.dom.eval(txt);
|
|
},
|
|
css: function(txt, src) {
|
|
wn.dom.set_style(txt);
|
|
}
|
|
}
|
|
}; |