Current File : //proc/985914/root/data/old/home/stash/stash/atlassian-stash/static/model/page-state.js
define('model/page-state', [
'util/events',
'util/text'
], function(
events,
textUtil
) {
'use strict';
var has = Object.prototype.hasOwnProperty;
var state = {};
var namedProps = {};
var api = {
extend : function(key, getterFn, setterFn) {
if (getterFn || setterFn) {
return addCustomProperty(key, getterFn, setterFn);
} else {
return addDefaultProperty(key);
}
}
};
// do a raw get from storage
function doGet(key) {
return has.call(state, key) ? state[key] : undefined;
}
/**
* do a raw set into storage. Fires an event with the old and new values.
* This will overwrite the previous value.
* @param key
* @param value
*/
function doSet(key, value) {
var old = doGet(key);
state[key] = value;
events.trigger('stash.model.page-state.changed.' + key, api, {
key : key,
newValue : value,
oldValue : old
});
}
// return a function that will get the given property when called
function getter(key) {
return function() {
return doGet(key);
};
}
// return a function that will set the given property when called
function setter(key) {
return function(value) {
return doSet(key, value);
};
}
/**
* Adds a property to the api as a pair of getter and setter, just a getter, or just a setter.
* @param key {string} the name of the property. A property like "project" will create a .getProject() and a .setProject()
* @param getterFn {?function()} an optional getter function for the property
* @param setterFn {?function(value)} an optional setter function that takes in a value
* @return {*}
*/
function addCustomProperty(key, getterFn, setterFn) {
if (has.call(namedProps, key)) {
throw new Error("The property " + key + " is already in use. Please use a different key.");
}
namedProps[key] = true;
if (getterFn) {
api["get" + textUtil.toSentenceCase(key)] = getterFn;
}
if (setterFn) {
api["set" + textUtil.toSentenceCase(key)] = setterFn;
}
return this;
}
/**
* Add a property with a trivial getter and setter.
* @param {string} key
* @return {*}
*/
function addDefaultProperty(key) {
return addCustomProperty(key, getter(key), setter(key));
}
// Reserve property names, even if we aren't using them.
addDefaultProperty("currentUser");
addDefaultProperty("project");
addDefaultProperty("repository");
addDefaultProperty("pullRequest");
addDefaultProperty("branch");
addDefaultProperty("changeset");
addDefaultProperty("filePath");
addDefaultProperty("revisionRef");
return api;
});
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