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/*
* Module : injected/jquery-plugins.js
* Copyright : (c) 2011-2012, Galois, Inc.
*
* Maintainer :
* Stability : Provisional
* Portability: Portable
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
var fiveui = fiveui || {};
/**
* This module provides several useful jQuery plugins related to checking and reporting
* UI consistency issues.
*
* @namespace
*/
fiveui.jquery = fiveui.jquery || {};
/**
* Wrapper for the :contains('text') selector
*
* @param {!String} text Text to select for
* @returns {!Object} A modified jQuery object
*/
fiveui.jquery.hasText = function (text) {
return this.filter(":contains('" + text + "')");
};
/**
* Color checker plugin: filters for elements whose CSS color property is
* not in the given set.
*
* @description Note: This is a special case of fiveui.jquery.cssIsNot, i.e.
* $(..).notColorSet(set) == $(..).cssIsNot("color", set, fiveui.color.colorToHex)
* @see {fiveui.color.colorToHex}
*
* @param {String[]} cset A set of allowable color strings
* @returns {!Object} A modified jQuery object
*/
fiveui.jquery.notColorSet = function (cset) {
var allowable = {};
for (var i = 0; i < cset.length; i += 1) { allowable[cset[i]] = true; } // array -> object
return this.filter(function (index) {
var color = fiveui.color.colorToHex($(this).css("color")); // .css("color") returns rgb(...)
return !(color in allowable);
});
}
/**
* General CSS propetry checker plugin
*
* @description This plugin filters for elements whose CSS property `prop` is not a member
* of the given array `cset`. The values checked are transformed using the
* optional given function `fn`. This may be used to normalize values that the
* browser returns so they can be compared to values in `cset`.
*
* @param {String} prop CSS property selector
* @param {String|String[]} set allowable values (either a string or an array of strings)
* @param {function(String):String} [fn] Function to apply to return values of $(this).css(prop), fn defaults to the identity function.
* @returns {Object} jQuery object
*/
fiveui.jquery.cssIsNot = function (prop, set, fn) {
var allowable = {};
fn = fn || function (x) { return x; }; // default is Id
if (typeof set === "string") {
allowable[fn(set)] = true;
}
else { // assume `set` is an array of strings
for (var i = 0; i < set.length; i += 1) { allowable[fn(set[i])] = true; } // array -> object
}
return this.filter(function (index) {
var cssProp = fn($(this).css(prop));
return !(cssProp in allowable);
});
}
/**
* Filter out elements that do not contain the attribute
* href=`href`.
*
* @param {String} href the href to look for
* @returns {Object} jQuery object
*/
fiveui.jquery.linksTo = function (href) {
return this.filter(function (index) {
var addr = $(this).attr("href");
return (addr == href);
});
}
/**
* Visually highlight elements in the jQuery object.
*
* @description This plugin is useful mostly in the process of writing
* guidelines, for example the guideline developer can load a page,
* click the "Break" button on the FiveUI window, enter the browser's
* Javascript console, and run:
*
* @example > $5("p").hasText("foo").highlight();
*
* @param {String} [hint] Highlighted border color, defaults to "red"
* @returns {!Object} A modified jQuery object
*/
fiveui.jquery.highlight = function (hint) {
hint = hint || "red"; // Default is "red"
return this.css("background-color", "rgba(255, 0, 0, 0.3)")
.css("border-style", "solid")
.css("border-color", hint);
}
/**
* Returns a list of css properties that element in the jQuery
* object have.
*
* @description This plugin is useful for analysis of a given page when
* writing guielines. For example if the guideline developer wants to
* know what font sizes are used on a loaded page, they can run from the
* Javascript console:
*
* @example > $5("*").propDist("font-size", true);
*
* @param {String} prop CSS property to be inspected
* @param {boolean} [log] Boolean which enables console logging of the result; default is `false`.
* @returns {Object} A frequence map { "property": frequency }
*/
fiveui.jquery.propDist = function (prop, log) {
var res = {};
log = log || false;
this.each(function (i, elt) {
var p = $(elt).css(prop);
if (p in res) {
res[p] += 1;
}
else {
res[p] = 1;
}
});
if (log) {
console.log("Property distribution:");
for (var p in res) {
console.log(" " + p + ": " + res[p]);
}
}
return res;
}
/**
* Register the plugins. This adds methods to the jQuery.fn namespace.
*/
fiveui.jquery.init = function () {
for (fn in fiveui.jquery) {
f = fiveui.jquery[fn];
if (jQuery.isFunction(f) && fn != "init") {
jQuery.fn[fn] = fiveui.jquery[fn];
}
}
}
fiveui.jquery.init();
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