all files / app/core/directives/ms-nav/ ms-nav.directive.js

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(function ()
{
    'use strict';
 
    angular
        .module('app.core')
        .factory('msNavFoldService', msNavFoldService)
        .directive('msNavIsFolded', msNavIsFoldedDirective)
        .controller('MsNavController', MsNavController)
        .directive('msNav', msNavDirective)
        .directive('msNavTitle', msNavTitleDirective)
        .directive('msNavButton', msNavButtonDirective)
        .directive('msNavToggle', msNavToggleDirective);
 
    /** @ngInject */
    function msNavFoldService()
    {
        var foldable = {};
 
        var service = {
            setFoldable    : setFoldable,
            isNavFoldedOpen: isNavFoldedOpen,
            toggleFold     : toggleFold,
            openFolded     : openFolded,
            closeFolded    : closeFolded
        };
 
        return service;
 
        //////////
 
        /**
         * Set the foldable
         *
         * @param scope
         * @param element
         */
        function setFoldable(scope, element)
        {
            foldable = {
                'scope'  : scope,
                'element': element
            };
        }
 
        /**
         * Is folded open
         */
        function isNavFoldedOpen()
        {
            return foldable.scope.isNavFoldedOpen();
        }
 
        /**
         * Toggle fold
         */
        function toggleFold()
        {
            foldable.scope.toggleFold();
        }
 
        /**
         * Open folded navigation
         */
        function openFolded()
        {
            foldable.scope.openFolded();
        }
 
        /**
         * Close folded navigation
         */
        function closeFolded()
        {
            foldable.scope.closeFolded();
        }
    }
 
    /** @ngInject */
    function msNavIsFoldedDirective($document, $rootScope, msNavFoldService)
    {
        return {
            restrict: 'A',
            link    : function (scope, iElement, iAttrs)
            {
                var isFolded = (iAttrs.msNavIsFolded === 'true'),
                    isFoldedOpen = false,
                    body = angular.element($document[0].body),
                    openOverlay = angular.element('<div id="ms-nav-fold-open-overlay"></div>'),
                    closeOverlay = angular.element('<div id="ms-nav-fold-close-overlay"></div>'),
                    sidenavEl = iElement.parent();
 
                // Initialize the service
                msNavFoldService.setFoldable(scope, iElement, isFolded);
 
                // Set the fold status for the first time
                if ( isFolded )
                {
                    fold();
                }
                else
                {
                    unfold();
                }
 
                /**
                 * Is nav folded open
                 */
                function isNavFoldedOpen()
                {
                    return isFoldedOpen;
                }
 
                /**
                 * Toggle fold
                 */
                function toggleFold()
                {
                    isFolded = !isFolded;
 
                    if ( isFolded )
                    {
                        fold();
                    }
                    else
                    {
                        unfold();
                    }
                }
 
                /**
                 * Fold the navigation
                 */
                function fold()
                {
                    // Add classes
                    body.addClass('ms-nav-folded');
 
                    // Collapse everything and scroll to the top
                    $rootScope.$broadcast('msNav::forceCollapse');
                    iElement.scrollTop(0);
 
                    // Append the openOverlay to the element
                    sidenavEl.append(openOverlay);
 
                    // Event listeners
                    openOverlay.on('mouseenter touchstart', function (event)
                    {
                        openFolded(event);
                        isFoldedOpen = true;
                    });
                }
 
                /**
                 * Open folded navigation
                 */
                function openFolded(event)
                {
                    if ( angular.isDefined(event) )
                    {
                        event.preventDefault();
                    }
 
                    body.addClass('ms-nav-folded-open');
 
                    // Update the location
                    $rootScope.$broadcast('msNav::expandMatchingToggles');
 
                    // Remove open overlay
                    sidenavEl.find(openOverlay).remove();
 
                    // Append close overlay and bind its events
                    sidenavEl.parent().append(closeOverlay);
                    closeOverlay.on('mouseenter touchstart', function (event)
                    {
                        closeFolded(event);
                        isFoldedOpen = false;
                    });
                }
 
                /**
                 * Close folded navigation
                 */
                function closeFolded(event)
                {
                    if ( angular.isDefined(event) )
                    {
                        event.preventDefault();
                    }
 
                    // Collapse everything and scroll to the top
                    $rootScope.$broadcast('msNav::forceCollapse');
                    iElement.scrollTop(0);
 
                    body.removeClass('ms-nav-folded-open');
 
                    // Remove close overlay
                    sidenavEl.parent().find(closeOverlay).remove();
 
                    // Append open overlay and bind its events
                    sidenavEl.append(openOverlay);
                    openOverlay.on('mouseenter touchstart', function (event)
                    {
                        openFolded(event);
                        isFoldedOpen = true;
                    });
                }
 
                /**
                 * Unfold the navigation
                 */
                function unfold()
                {
                    body.removeClass('ms-nav-folded ms-nav-folded-open');
 
                    // Update the location
                    $rootScope.$broadcast('msNav::expandMatchingToggles');
 
                    iElement.off('mouseenter mouseleave');
                }
 
                // Expose functions to the scope
                scope.toggleFold = toggleFold;
                scope.openFolded = openFolded;
                scope.closeFolded = closeFolded;
                scope.isNavFoldedOpen = isNavFoldedOpen;
 
                // Cleanup
                scope.$on('$destroy', function ()
                {
                    openOverlay.off('mouseenter touchstart');
                    closeOverlay.off('mouseenter touchstart');
                    iElement.off('mouseenter mouseleave');
                });
            }
        };
    }
 
 
    /** @ngInject */
    function MsNavController()
    {
        var vm = this,
            disabled = false,
            toggleItems = [],
            lockedItems = [];
 
        // Data
 
        // Methods
        vm.isDisabled = isDisabled;
        vm.enable = enable;
        vm.disable = disable;
        vm.setToggleItem = setToggleItem;
        vm.getLockedItems = getLockedItems;
        vm.setLockedItem = setLockedItem;
        vm.clearLockedItems = clearLockedItems;
 
        //////////
 
        /**
         * Is navigation disabled
         *
         * @returns {boolean}
         */
        function isDisabled()
        {
            return disabled;
        }
 
        /**
         * Disable the navigation
         */
        function disable()
        {
            disabled = true;
        }
 
        /**
         * Enable the navigation
         */
        function enable()
        {
            disabled = false;
        }
 
        /**
         * Set toggle item
         *
         * @param element
         * @param scope
         */
        function setToggleItem(element, scope)
        {
            toggleItems.push({
                'element': element,
                'scope'  : scope
            });
        }
 
        /**
         * Get locked items
         *
         * @returns {Array}
         */
        function getLockedItems()
        {
            return lockedItems;
        }
 
        /**
         * Set locked item
         *
         * @param element
         * @param scope
         */
        function setLockedItem(element, scope)
        {
            lockedItems.push({
                'element': element,
                'scope'  : scope
            });
        }
 
        /**
         * Clear locked items list
         */
        function clearLockedItems()
        {
            lockedItems = [];
        }
    }
 
    /** @ngInject */
    function msNavDirective($rootScope, $mdComponentRegistry, msNavFoldService)
    {
        return {
            restrict  : 'E',
            scope     : {},
            controller: 'MsNavController',
            compile   : function (tElement)
            {
                tElement.addClass('ms-nav');
 
                return function postLink(scope)
                {
                    // Update toggle status according to the ui-router current state
                    $rootScope.$broadcast('msNav::expandMatchingToggles');
 
                    // Update toggles on state changes
                    var stateChangeSuccessEvent = $rootScope.$on('$stateChangeSuccess', function ()
                    {
                        $rootScope.$broadcast('msNav::expandMatchingToggles');
 
                        // Close navigation sidenav on stateChangeSuccess
                        $mdComponentRegistry.when('navigation').then(function (navigation)
                        {
                            navigation.close();
 
                            if ( msNavFoldService.isNavFoldedOpen() )
                            {
                                msNavFoldService.closeFolded();
                            }
                        });
                    });
 
                    // Cleanup
                    scope.$on('$destroy', function ()
                    {
                        stateChangeSuccessEvent();
                    });
                };
            }
        };
    }
 
    /** @ngInject */
    function msNavTitleDirective()
    {
        return {
            restrict: 'A',
            compile : function (tElement)
            {
                tElement.addClass('ms-nav-title');
 
                return function postLink()
                {
 
                };
            }
        };
    }
 
    /** @ngInject */
    function msNavButtonDirective()
    {
        return {
            restrict: 'AE',
            compile : function (tElement)
            {
                tElement.addClass('ms-nav-button');
 
                return function postLink()
                {
 
                };
            }
        };
    }
 
    /** @ngInject */
    function msNavToggleDirective($rootScope, $q, $animate, $state)
    {
        return {
            restrict: 'A',
            require : '^msNav',
            scope   : true,
            compile : function (tElement, tAttrs)
            {
                tElement.addClass('ms-nav-toggle');
 
                // Add collapsed attr
                if ( angular.isUndefined(tAttrs.collapsed) )
                {
                    tAttrs.collapsed = true;
                }
 
                tElement.attr('collapsed', tAttrs.collapsed);
 
                return function postLink(scope, iElement, iAttrs, MsNavCtrl)
                {
                    var classes = {
                        expanded         : 'expanded',
                        expandAnimation  : 'expand-animation',
                        collapseAnimation: 'collapse-animation'
                    };
 
                    // Store all related states
                    var links = iElement.find('a');
                    var states = [];
                    var regExp = /\(.*\)/g;
 
                    angular.forEach(links, function (link)
                    {
                        var state = angular.element(link).attr('ui-sref');
 
                        if ( angular.isUndefined(state) )
                        {
                            return;
                        }
 
                        // Remove any parameter definition from the state name before storing it
                        state = state.replace(regExp, '');
 
                        states.push(state);
                    });
 
                    // Store toggle-able element and its scope in the main nav controller
                    MsNavCtrl.setToggleItem(iElement, scope);
 
                    // Click handler
                    iElement.children('.ms-nav-button').on('click', toggle);
 
                    // Toggle function
                    function toggle()
                    {
                        // If navigation is disabled, do nothing...
                        if ( MsNavCtrl.isDisabled() )
                        {
                            return;
                        }
 
                        // Disable the entire navigation to prevent spamming
                        MsNavCtrl.disable();
 
                        if ( isCollapsed() )
                        {
                            // Clear the locked items list
                            MsNavCtrl.clearLockedItems();
 
                            // Emit pushToLockedList event
                            scope.$emit('msNav::pushToLockedList');
 
                            // Collapse everything but locked items
                            $rootScope.$broadcast('msNav::collapse');
 
                            // Expand and then...
                            expand().then(function ()
                            {
                                // Enable the entire navigation after animations completed
                                MsNavCtrl.enable();
                            });
                        }
                        else
                        {
                            // Collapse with all children
                            scope.$broadcast('msNav::forceCollapse');
                        }
                    }
 
                    // Cleanup
                    scope.$on('$destroy', function ()
                    {
                        iElement.children('.ms-nav-button').off('click');
                    });
 
                    /*---------------------*/
                    /* Scope Events        */
                    /*---------------------*/
 
                    /**
                     * Collapse everything but locked items
                     */
                    scope.$on('msNav::collapse', function ()
                    {
                        // Only collapse toggles that are not locked
                        var lockedItems = MsNavCtrl.getLockedItems();
                        var locked = false;
 
                        angular.forEach(lockedItems, function (lockedItem)
                        {
                            if ( angular.equals(lockedItem.scope, scope) )
                            {
                                locked = true;
                            }
                        });
 
                        if ( locked )
                        {
                            return;
                        }
 
                        // Collapse and then...
                        collapse().then(function ()
                        {
                            // Enable the entire navigation after animations completed
                            MsNavCtrl.enable();
                        });
                    });
 
                    /**
                     * Collapse everything
                     */
                    scope.$on('msNav::forceCollapse', function ()
                    {
                        // Collapse and then...
                        collapse().then(function ()
                        {
                            // Enable the entire navigation after animations completed
                            MsNavCtrl.enable();
                        });
                    });
 
                    /**
                     * Expand toggles that match with the current states
                     */
                    scope.$on('msNav::expandMatchingToggles', function ()
                    {
                        var currentState = $state.current.name;
                        var shouldExpand = false;
 
                        angular.forEach(states, function (state)
                        {
                            if ( currentState === state )
                            {
                                shouldExpand = true;
                            }
                        });
 
                        if ( shouldExpand )
                        {
                            expand();
                        }
                        else
                        {
                            collapse();
                        }
                    });
 
                    /**
                     * Add toggle to the locked list
                     */
                    scope.$on('msNav::pushToLockedList', function ()
                    {
                        // Set expanded item on main nav controller
                        MsNavCtrl.setLockedItem(iElement, scope);
                    });
 
                    /*---------------------*/
                    /* Internal functions  */
                    /*---------------------*/
 
                    /**
                     * Is element collapsed
                     *
                     * @returns {bool}
                     */
                    function isCollapsed()
                    {
                        return iElement.attr('collapsed') === 'true';
                    }
 
                    /**
                     * Is element expanded
                     *
                     * @returns {bool}
                     */
                    function isExpanded()
                    {
                        return !isCollapsed();
                    }
 
                    /**
                     * Expand the toggle
                     *
                     * @returns $promise
                     */
                    function expand()
                    {
                        // Create a new deferred object
                        var deferred = $q.defer();
 
                        // If the menu item is already expanded, do nothing..
                        if ( isExpanded() )
                        {
                            // Reject the deferred object
                            deferred.reject({'error': true});
 
                            // Return the promise
                            return deferred.promise;
                        }
 
                        // Set element attr
                        iElement.attr('collapsed', false);
 
                        // Grab the element to expand
                        var elementToExpand = angular.element(iElement.find('ms-nav-toggle-items')[0]);
 
                        // Move the element out of the dom flow and
                        // make it block so we can get its height
                        elementToExpand.css({
                            'position'  : 'absolute',
                            'visibility': 'hidden',
                            'display'   : 'block',
                            'height'    : 'auto'
                        });
 
                        // Grab the height
                        var height = elementToExpand[0].offsetHeight;
 
                        // Reset the style modifications
                        elementToExpand.css({
                            'position'  : '',
                            'visibility': '',
                            'display'   : '',
                            'height'    : ''
                        });
 
                        // Animate the height
                        scope.$evalAsync(function ()
                        {
                            $animate.animate(elementToExpand,
                                {
                                    'display': 'block',
                                    'height' : '0px'
                                },
                                {
                                    'height': height + 'px'
                                },
                                classes.expandAnimation
                            ).then(
                                function ()
                                {
                                    // Add expanded class
                                    elementToExpand.addClass(classes.expanded);
 
                                    // Clear the inline styles after animation done
                                    elementToExpand.css({'height': ''});
 
                                    // Resolve the deferred object
                                    deferred.resolve({'success': true});
                                }
                            );
                        });
 
                        // Return the promise
                        return deferred.promise;
                    }
 
                    /**
                     * Collapse the toggle
                     *
                     * @returns $promise
                     */
                    function collapse()
                    {
                        // Create a new deferred object
                        var deferred = $q.defer();
 
                        // If the menu item is already collapsed, do nothing..
                        if ( isCollapsed() )
                        {
                            // Reject the deferred object
                            deferred.reject({'error': true});
 
                            // Return the promise
                            return deferred.promise;
                        }
 
                        // Set element attr
                        iElement.attr('collapsed', true);
 
                        // Grab the element to collapse
                        var elementToCollapse = angular.element(iElement.find('ms-nav-toggle-items')[0]);
 
                        // Grab the height
                        var height = elementToCollapse[0].offsetHeight;
 
                        // Animate the height
                        scope.$evalAsync(function ()
                        {
                            $animate.animate(elementToCollapse,
                                {
                                    'height': height + 'px'
                                },
                                {
                                    'height': '0px'
                                },
                                classes.collapseAnimation
                            ).then(
                                function ()
                                {
                                    // Remove expanded class
                                    elementToCollapse.removeClass(classes.expanded);
 
                                    // Clear the inline styles after animation done
                                    elementToCollapse.css({
                                        'display': '',
                                        'height' : ''
                                    });
 
                                    // Resolve the deferred object
                                    deferred.resolve({'success': true});
                                }
                            );
                        });
 
                        // Return the promise
                        return deferred.promise;
                    }
                };
            }
        };
    }
})();