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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,3 +1,4 @@ | ||
| .DS_Store | ||
| AIRAliases.js | ||
| AIRIntrospector.js | ||
| /lib |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,20 @@ | ||
| #VERSION = "0.9.0" | ||
| #BASE = "./lib/lawnchair-dom-" + $VERSION + ".js" | ||
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| default: clean build min test | ||
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| clean: | ||
| rm -rf ./lib | ||
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| build: | ||
| mkdir -p ./lib && touch ./lib/lawnchair.js | ||
| cat ./src/lawnchair.js > ./lib/lawnchair.js | ||
| cat ./src/adaptors/dom.js >> ./lib/lawnchair.js | ||
| cat ./src/plugins/iteration.js >> ./lib/lawnchair.js | ||
| min: | ||
| echo 'TODO: min' | ||
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| test: | ||
| open ./spec/public/adaptors/dom.html | ||
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| .PHONY: all |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,84 +1,103 @@ | ||
| /** | ||
| * Lawnchair | ||
| * ========= | ||
| * A lightweight JSON document store. | ||
| * TODO batch inseration | ||
| * | ||
| */ | ||
| var Lawnchair = function(opts) { | ||
| this.init(opts); | ||
| var Lawnchair = function (options, callback) { | ||
| // lawnchair requires json | ||
| if (!JSON) throw "JSON unavailable! Include http://www.json.org/json2.js to fix." | ||
| // startup plugins | ||
| this._initPlugins() | ||
| // mixin first valid adaptor | ||
| this._initAdaptor() | ||
| // init the adaptor | ||
| this.init(options, callback) | ||
| } | ||
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| Lawnchair.adaptors = [] | ||
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| /** | ||
| * queue an adaptor for mixin | ||
| * === | ||
| * - checks for standard methods: adaptor init, save, get, exists, all, remove, nuke | ||
| * | ||
| */ | ||
| Lawnchair.adaptor = function (id, obj) { | ||
| // add the adaptor id to the adaptor obj | ||
| // ugly here for a cleaner dsl for implementing adaptors | ||
| obj['adaptor'] = id | ||
| // methods required to implement a lawnchair adaptor | ||
| var implements = 'adaptor valid init save get exists all remove nuke'.split(' ') | ||
| // mix in the adaptor | ||
| for (var i in obj) { | ||
| if (implements.indexOf(i) === -1) throw 'Invalid adaptor! Method missing: ' + i | ||
| } | ||
| // if we made it this far the adaptor interface is valid | ||
| Lawnchair.adaptors.push(obj) | ||
| } | ||
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| Lawnchair.plugins = [] | ||
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| /** | ||
| * generic extension for plugins | ||
| * === | ||
| * - if an init method is found it registers it to be called when the lawnchair is inited | ||
| * | ||
| */ | ||
| Lawnchair.plugin = function(obj) { | ||
| for (var i in obj) { | ||
| if (i === 'init') { | ||
| Lawnchair.plugins.push(obj[i]) | ||
| } else { | ||
| this.prototype[i] = obj[i] | ||
| } | ||
| } | ||
| } | ||
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| /** | ||
| * helpers | ||
| * | ||
| */ | ||
| Lawnchair.prototype = { | ||
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| init:function(opts) { | ||
| var adaptors = { | ||
| 'webkit':window.WebkitSQLiteAdaptor, | ||
| 'gears':window.GearsSQLiteAdaptor, | ||
| 'dom':window.DOMStorageAdaptor, | ||
| 'cookie':window.CookieAdaptor, | ||
| 'air':window.AIRSQLiteAdaptor, | ||
| 'userdata':window.UserDataAdaptor, | ||
| 'air-async':window.AIRSQLiteAsyncAdaptor, | ||
| 'blackberry':window.BlackBerryPersistentStorageAdaptor, | ||
| 'couch':window.CouchAdaptor | ||
| }; | ||
| this.adaptor = opts.adaptor ? new adaptors[opts.adaptor](opts) : new DOMStorageAdaptor(opts); | ||
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| // Check for native JSON functions. | ||
| if (!JSON || !JSON.stringify) throw "Native JSON functions unavailable - please include http://www.json.org/json2.js or run on a decent browser :P"; | ||
| }, | ||
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| // Save an object to the store. If a key is present then update. Otherwise create a new record. | ||
| save:function(obj, callback) {this.adaptor.save(obj, callback)}, | ||
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| // Invokes a callback on an object with the matching key. | ||
| get:function(key, callback) {this.adaptor.get(key, callback)}, | ||
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| // Returns whether a key exists to a callback. | ||
| exists:function(callback) {this.adaptor.exists(callback)}, | ||
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| // Returns all rows to a callback. | ||
| all:function(callback) {this.adaptor.all(callback)}, | ||
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| // Removes a json object from the store. | ||
| remove:function(keyOrObj, callback) {this.adaptor.remove(keyOrObj, callback)}, | ||
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| // Removes all documents from a store and returns self. | ||
| nuke:function(callback) {this.adaptor.nuke(callback);return this}, | ||
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| // Returns a page of results based on offset provided by user and perPage option | ||
| paged:function(page, callback) {this.adaptor.paged(page, callback)}, | ||
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| /** | ||
| * Iterator that accepts two paramters (methods or eval strings): | ||
| * | ||
| * - conditional test for a record | ||
| * - callback to invoke on matches | ||
| * | ||
| */ | ||
| find:function(condition, callback) { | ||
| var is = (typeof condition == 'string') ? function(r){return eval(condition)} : condition | ||
| , cb = this.adaptor.terseToVerboseCallback(callback); | ||
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| this.each(function(record, index) { | ||
| if (is(record)) cb(record, index); // thats hot | ||
| }); | ||
| _initPlugins: function () { | ||
| var self = this | ||
| Lawnchair.plugins.forEach(function(plugin){ | ||
| plugin.call(self) | ||
| }) | ||
| }, | ||
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| _initAdaptor: function () { | ||
| // iterate all adaptors | ||
| for (var i = 0, l = Lawnchair.adaptors.length; i < l; i++) { | ||
| // mixin the first adaptor that is valid for this env | ||
| var adaptor = Lawnchair.adaptors[i] | ||
| if (adaptor.valid()) { | ||
| for (var j in adaptor) { | ||
| this[j] = adaptor[j] | ||
| } | ||
| break | ||
| } | ||
| } | ||
| // we have failed | ||
| if (!this.adaptor) throw 'No valid adaptor.' | ||
| }, | ||
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| // merging default properties with user defined options in lawnchair init | ||
| merge: function (defaultOption, userOption) { | ||
| return (userOption == undefined || userOption == null) ? defaultOption: userOption; | ||
| }, | ||
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| // awesome shorthand callbacks as strings. this is shameless theft from dojo. | ||
| terseToVerboseCallback: function (callback) { | ||
| return (typeof arguments[0] == 'string') ? function (r, i) { eval(callback) } : callback; | ||
| }, | ||
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| /** | ||
| * Classic iterator. | ||
| * - Passes the record and the index as the second parameter to the callback. | ||
| * - Accepts a string for eval or a method to be invoked for each document in the collection. | ||
| */ | ||
| each:function(callback) { | ||
| var cb = this.adaptor.terseToVerboseCallback(callback); | ||
| this.all(function(results) { | ||
| var l = results.length; | ||
| for (var i = 0; i < l; i++) { | ||
| cb(results[i], i); | ||
| } | ||
| }); | ||
| // returns a unique identifier (by way of Backbone.localStorage.js) | ||
| uuid: function () { | ||
| var S4 = function () { | ||
| return (((1+Math.random())*0x10000)|0).toString(16).substring(1); | ||
| } | ||
| return (S4()+S4()+"-"+S4()+"-"+S4()+"-"+S4()+"-"+S4()+S4()+S4()); | ||
| } | ||
| // -- | ||
| }; |
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