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326 lines
9.6 KiB
JavaScript
326 lines
9.6 KiB
JavaScript
(function () {
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"use strict";
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/**
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* Bindonce - Zero watches binding for AngularJs
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* @version v0.3.3
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* @link https://github.com/Pasvaz/bindonce
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* @author Pasquale Vazzana <pasqualevazzana@gmail.com>
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* @license MIT License, http://www.opensource.org/licenses/MIT
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*/
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var bindonceModule = angular.module('pasvaz.bindonce', []);
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bindonceModule.directive('bindonce', function ()
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{
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var toBoolean = function (value)
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{
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if (value && value.length !== 0)
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{
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var v = angular.lowercase("" + value);
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value = !(v === 'f' || v === '0' || v === 'false' || v === 'no' || v === 'n' || v === '[]');
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}
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else
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{
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value = false;
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}
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return value;
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};
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var msie = parseInt((/msie (\d+)/.exec(angular.lowercase(navigator.userAgent)) || [])[1], 10);
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if (isNaN(msie))
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{
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msie = parseInt((/trident\/.*; rv:(\d+)/.exec(angular.lowercase(navigator.userAgent)) || [])[1], 10);
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}
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var bindonceDirective =
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{
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restrict: "AM",
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controller: ['$scope', '$element', '$attrs', '$interpolate', function ($scope, $element, $attrs, $interpolate)
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{
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var showHideBinder = function (elm, attr, value)
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{
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var show = (attr === 'show') ? '' : 'none';
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var hide = (attr === 'hide') ? '' : 'none';
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elm.css('display', toBoolean(value) ? show : hide);
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};
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var classBinder = function (elm, value)
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{
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if (angular.isObject(value) && !angular.isArray(value))
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{
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var results = [];
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angular.forEach(value, function (value, index)
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{
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if (value) results.push(index);
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});
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value = results;
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}
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if (value)
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{
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elm.addClass(angular.isArray(value) ? value.join(' ') : value);
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}
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};
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var transclude = function (transcluder, scope)
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{
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transcluder.transclude(scope, function (clone)
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{
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var parent = transcluder.element.parent();
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var afterNode = transcluder.element && transcluder.element[transcluder.element.length - 1];
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var parentNode = parent && parent[0] || afterNode && afterNode.parentNode;
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var afterNextSibling = (afterNode && afterNode.nextSibling) || null;
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angular.forEach(clone, function (node)
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{
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parentNode.insertBefore(node, afterNextSibling);
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});
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});
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};
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var ctrl =
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{
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watcherRemover: undefined,
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binders: [],
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group: $attrs.boName,
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element: $element,
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ran: false,
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addBinder: function (binder)
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{
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this.binders.push(binder);
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// In case of late binding (when using the directive bo-name/bo-parent)
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// it happens only when you use nested bindonce, if the bo-children
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// are not dom children the linking can follow another order
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if (this.ran)
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{
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this.runBinders();
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}
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},
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setupWatcher: function (bindonceValue)
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{
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var that = this;
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this.watcherRemover = $scope.$watch(bindonceValue, function (newValue)
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{
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if (newValue === undefined) return;
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that.removeWatcher();
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that.checkBindonce(newValue);
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}, true);
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},
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checkBindonce: function (value)
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{
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var that = this, promise = (value.$promise) ? value.$promise.then : value.then;
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// since Angular 1.2 promises are no longer
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// undefined until they don't get resolved
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if (typeof promise === 'function')
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{
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promise(function ()
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{
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that.runBinders();
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});
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}
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else
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{
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that.runBinders();
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}
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},
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removeWatcher: function ()
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{
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if (this.watcherRemover !== undefined)
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{
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this.watcherRemover();
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this.watcherRemover = undefined;
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}
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},
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runBinders: function ()
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{
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while (this.binders.length > 0)
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{
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var binder = this.binders.shift();
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if (this.group && this.group != binder.group) continue;
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var value = binder.scope.$eval((binder.interpolate) ? $interpolate(binder.value) : binder.value);
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switch (binder.attr)
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{
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case 'boIf':
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if (toBoolean(value))
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{
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transclude(binder, binder.scope.$new());
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}
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break;
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case 'boSwitch':
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var selectedTranscludes, switchCtrl = binder.controller[0];
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if ((selectedTranscludes = switchCtrl.cases['!' + value] || switchCtrl.cases['?']))
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{
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binder.scope.$eval(binder.attrs.change);
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angular.forEach(selectedTranscludes, function (selectedTransclude)
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{
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transclude(selectedTransclude, binder.scope.$new());
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});
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}
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break;
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case 'boSwitchWhen':
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var ctrl = binder.controller[0];
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ctrl.cases['!' + binder.attrs.boSwitchWhen] = (ctrl.cases['!' + binder.attrs.boSwitchWhen] || []);
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ctrl.cases['!' + binder.attrs.boSwitchWhen].push({ transclude: binder.transclude, element: binder.element });
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break;
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case 'boSwitchDefault':
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var ctrl = binder.controller[0];
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ctrl.cases['?'] = (ctrl.cases['?'] || []);
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ctrl.cases['?'].push({ transclude: binder.transclude, element: binder.element });
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break;
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case 'hide':
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case 'show':
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showHideBinder(binder.element, binder.attr, value);
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break;
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case 'class':
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classBinder(binder.element, value);
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break;
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case 'text':
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binder.element.text(value);
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break;
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case 'html':
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binder.element.html(value);
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break;
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case 'style':
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binder.element.css(value);
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break;
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case 'disabled':
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binder.element.prop('disabled', value);
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break;
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case 'src':
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binder.element.attr(binder.attr, value);
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if (msie) binder.element.prop('src', value);
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break;
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case 'attr':
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angular.forEach(binder.attrs, function (attrValue, attrKey)
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{
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var newAttr, newValue;
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if (attrKey.match(/^boAttr./) && binder.attrs[attrKey])
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{
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newAttr = attrKey.replace(/^boAttr/, '').replace(/([a-z])([A-Z])/g, '$1-$2').toLowerCase();
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newValue = binder.scope.$eval(binder.attrs[attrKey]);
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binder.element.attr(newAttr, newValue);
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}
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});
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break;
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case 'href':
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case 'alt':
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case 'title':
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case 'id':
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case 'value':
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binder.element.attr(binder.attr, value);
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break;
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}
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}
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this.ran = true;
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}
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};
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angular.extend(this, ctrl);
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}],
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link: function (scope, elm, attrs, bindonceController)
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{
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var value = attrs.bindonce && scope.$eval(attrs.bindonce);
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if (value !== undefined)
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{
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bindonceController.checkBindonce(value);
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}
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else
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{
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bindonceController.setupWatcher(attrs.bindonce);
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elm.bind("$destroy", bindonceController.removeWatcher);
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}
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}
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};
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return bindonceDirective;
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});
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angular.forEach(
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[
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{ directiveName: 'boShow', attribute: 'show' },
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{ directiveName: 'boHide', attribute: 'hide' },
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{ directiveName: 'boClass', attribute: 'class' },
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{ directiveName: 'boText', attribute: 'text' },
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{ directiveName: 'boBind', attribute: 'text' },
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{ directiveName: 'boHtml', attribute: 'html' },
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{ directiveName: 'boSrcI', attribute: 'src', interpolate: true },
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{ directiveName: 'boSrc', attribute: 'src' },
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{ directiveName: 'boHrefI', attribute: 'href', interpolate: true },
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{ directiveName: 'boHref', attribute: 'href' },
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{ directiveName: 'boAlt', attribute: 'alt' },
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{ directiveName: 'boTitle', attribute: 'title' },
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{ directiveName: 'boId', attribute: 'id' },
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{ directiveName: 'boStyle', attribute: 'style' },
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{ directiveName: 'boDisabled', attribute: 'disabled' },
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{ directiveName: 'boValue', attribute: 'value' },
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{ directiveName: 'boAttr', attribute: 'attr' },
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{ directiveName: 'boIf', transclude: 'element', terminal: true, priority: 1000 },
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{ directiveName: 'boSwitch', require: 'boSwitch', controller: function () { this.cases = {}; } },
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{ directiveName: 'boSwitchWhen', transclude: 'element', priority: 800, require: '^boSwitch' },
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{ directiveName: 'boSwitchDefault', transclude: 'element', priority: 800, require: '^boSwitch' }
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],
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function (boDirective)
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{
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var childPriority = 200;
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return bindonceModule.directive(boDirective.directiveName, function ()
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{
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var bindonceDirective =
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{
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priority: boDirective.priority || childPriority,
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transclude: boDirective.transclude || false,
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terminal: boDirective.terminal || false,
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require: ['^bindonce'].concat(boDirective.require || []),
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controller: boDirective.controller,
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compile: function (tElement, tAttrs, transclude)
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{
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return function (scope, elm, attrs, controllers)
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{
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var bindonceController = controllers[0];
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var name = attrs.boParent;
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if (name && bindonceController.group !== name)
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{
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var element = bindonceController.element.parent();
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bindonceController = undefined;
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var parentValue;
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while (element[0].nodeType !== 9 && element.length)
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{
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if ((parentValue = element.data('$bindonceController'))
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&& parentValue.group === name)
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{
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bindonceController = parentValue;
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break;
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}
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element = element.parent();
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}
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if (!bindonceController)
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{
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throw new Error("No bindonce controller: " + name);
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}
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}
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bindonceController.addBinder(
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{
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element: elm,
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attr: boDirective.attribute || boDirective.directiveName,
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attrs: attrs,
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value: attrs[boDirective.directiveName],
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interpolate: boDirective.interpolate,
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group: name,
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transclude: transclude,
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controller: controllers.slice(1),
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scope: scope
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});
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};
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}
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};
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return bindonceDirective;
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});
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})
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})();
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