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+/**
+ * @license AngularJS v1.5.0
+ * (c) 2010-2016 Google, Inc. http://angularjs.org
+ * License: MIT
+ */
+(function(window, angular, undefined) {'use strict';
+
+/* global ngTouchClickDirectiveFactory: false,
+ */
+
+/**
+ * @ngdoc module
+ * @name ngTouch
+ * @description
+ *
+ * # ngTouch
+ *
+ * The `ngTouch` module provides touch events and other helpers for touch-enabled devices.
+ * The implementation is based on jQuery Mobile touch event handling
+ * ([jquerymobile.com](http://jquerymobile.com/)).
+ *
+ *
+ * See {@link ngTouch.$swipe `$swipe`} for usage.
+ *
+ * <div doc-module-components="ngTouch"></div>
+ *
+ */
+
+// define ngTouch module
+/* global -ngTouch */
+var ngTouch = angular.module('ngTouch', []);
+
+ngTouch.provider('$touch', $TouchProvider);
+
+function nodeName_(element) {
+ return angular.lowercase(element.nodeName || (element[0] && element[0].nodeName));
+}
+
+/**
+ * @ngdoc provider
+ * @name $touchProvider
+ *
+ * @description
+ * The `$touchProvider` allows enabling / disabling {@link ngTouch.ngClick ngTouch's ngClick directive}.
+ */
+$TouchProvider.$inject = ['$provide', '$compileProvider'];
+function $TouchProvider($provide, $compileProvider) {
+
+ /**
+ * @ngdoc method
+ * @name $touchProvider#ngClickOverrideEnabled
+ *
+ * @param {boolean=} enabled update the ngClickOverrideEnabled state if provided, otherwise just return the
+ * current ngClickOverrideEnabled state
+ * @returns {*} current value if used as getter or itself (chaining) if used as setter
+ *
+ * @kind function
+ *
+ * @description
+ * Call this method to enable/disable {@link ngTouch.ngClick ngTouch's ngClick directive}. If enabled,
+ * the default ngClick directive will be replaced by a version that eliminates the 300ms delay for
+ * click events on browser for touch-devices.
+ *
+ * The default is `false`.
+ *
+ */
+ var ngClickOverrideEnabled = false;
+ var ngClickDirectiveAdded = false;
+ this.ngClickOverrideEnabled = function(enabled) {
+ if (angular.isDefined(enabled)) {
+
+ if (enabled && !ngClickDirectiveAdded) {
+ ngClickDirectiveAdded = true;
+
+ // Use this to identify the correct directive in the delegate
+ ngTouchClickDirectiveFactory.$$moduleName = 'ngTouch';
+ $compileProvider.directive('ngClick', ngTouchClickDirectiveFactory);
+
+ $provide.decorator('ngClickDirective', ['$delegate', function($delegate) {
+ if (ngClickOverrideEnabled) {
+ // drop the default ngClick directive
+ $delegate.shift();
+ } else {
+ // drop the ngTouch ngClick directive if the override has been re-disabled (because
+ // we cannot de-register added directives)
+ var i = $delegate.length - 1;
+ while (i >= 0) {
+ if ($delegate[i].$$moduleName === 'ngTouch') {
+ $delegate.splice(i, 1);
+ break;
+ }
+ i--;
+ }
+ }
+
+ return $delegate;
+ }]);
+ }
+
+ ngClickOverrideEnabled = enabled;
+ return this;
+ }
+
+ return ngClickOverrideEnabled;
+ };
+
+ /**
+ * @ngdoc service
+ * @name $touch
+ * @kind object
+ *
+ * @description
+ * Provides the {@link ngTouch.$touch#ngClickOverrideEnabled `ngClickOverrideEnabled`} method.
+ *
+ */
+ this.$get = function() {
+ return {
+ /**
+ * @ngdoc method
+ * @name $touch#ngClickOverrideEnabled
+ *
+ * @returns {*} current value of `ngClickOverrideEnabled` set in the {@link ngTouch.$touchProvider $touchProvider},
+ * i.e. if {@link ngTouch.ngClick ngTouch's ngClick} directive is enabled.
+ *
+ * @kind function
+ */
+ ngClickOverrideEnabled: function() {
+ return ngClickOverrideEnabled;
+ }
+ };
+ };
+
+}
+
+/* global ngTouch: false */
+
+ /**
+ * @ngdoc service
+ * @name $swipe
+ *
+ * @description
+ * The `$swipe` service is a service that abstracts the messier details of hold-and-drag swipe
+ * behavior, to make implementing swipe-related directives more convenient.
+ *
+ * Requires the {@link ngTouch `ngTouch`} module to be installed.
+ *
+ * `$swipe` is used by the `ngSwipeLeft` and `ngSwipeRight` directives in `ngTouch`.
+ *
+ * # Usage
+ * The `$swipe` service is an object with a single method: `bind`. `bind` takes an element
+ * which is to be watched for swipes, and an object with four handler functions. See the
+ * documentation for `bind` below.
+ */
+
+ngTouch.factory('$swipe', [function() {
+ // The total distance in any direction before we make the call on swipe vs. scroll.
+ var MOVE_BUFFER_RADIUS = 10;
+
+ var POINTER_EVENTS = {
+ 'mouse': {
+ start: 'mousedown',
+ move: 'mousemove',
+ end: 'mouseup'
+ },
+ 'touch': {
+ start: 'touchstart',
+ move: 'touchmove',
+ end: 'touchend',
+ cancel: 'touchcancel'
+ }
+ };
+
+ function getCoordinates(event) {
+ var originalEvent = event.originalEvent || event;
+ var touches = originalEvent.touches && originalEvent.touches.length ? originalEvent.touches : [originalEvent];
+ var e = (originalEvent.changedTouches && originalEvent.changedTouches[0]) || touches[0];
+
+ return {
+ x: e.clientX,
+ y: e.clientY
+ };
+ }
+
+ function getEvents(pointerTypes, eventType) {
+ var res = [];
+ angular.forEach(pointerTypes, function(pointerType) {
+ var eventName = POINTER_EVENTS[pointerType][eventType];
+ if (eventName) {
+ res.push(eventName);
+ }
+ });
+ return res.join(' ');
+ }
+
+ return {
+ /**
+ * @ngdoc method
+ * @name $swipe#bind
+ *
+ * @description
+ * The main method of `$swipe`. It takes an element to be watched for swipe motions, and an
+ * object containing event handlers.
+ * The pointer types that should be used can be specified via the optional
+ * third argument, which is an array of strings `'mouse'` and `'touch'`. By default,
+ * `$swipe` will listen for `mouse` and `touch` events.
+ *
+ * The four events are `start`, `move`, `end`, and `cancel`. `start`, `move`, and `end`
+ * receive as a parameter a coordinates object of the form `{ x: 150, y: 310 }` and the raw
+ * `event`. `cancel` receives the raw `event` as its single parameter.
+ *
+ * `start` is called on either `mousedown` or `touchstart`. After this event, `$swipe` is
+ * watching for `touchmove` or `mousemove` events. These events are ignored until the total
+ * distance moved in either dimension exceeds a small threshold.
+ *
+ * Once this threshold is exceeded, either the horizontal or vertical delta is greater.
+ * - If the horizontal distance is greater, this is a swipe and `move` and `end` events follow.
+ * - If the vertical distance is greater, this is a scroll, and we let the browser take over.
+ * A `cancel` event is sent.
+ *
+ * `move` is called on `mousemove` and `touchmove` after the above logic has determined that
+ * a swipe is in progress.
+ *
+ * `end` is called when a swipe is successfully completed with a `touchend` or `mouseup`.
+ *
+ * `cancel` is called either on a `touchcancel` from the browser, or when we begin scrolling
+ * as described above.
+ *
+ */
+ bind: function(element, eventHandlers, pointerTypes) {
+ // Absolute total movement, used to control swipe vs. scroll.
+ var totalX, totalY;
+ // Coordinates of the start position.
+ var startCoords;
+ // Last event's position.
+ var lastPos;
+ // Whether a swipe is active.
+ var active = false;
+
+ pointerTypes = pointerTypes || ['mouse', 'touch'];
+ element.on(getEvents(pointerTypes, 'start'), function(event) {
+ startCoords = getCoordinates(event);
+ active = true;
+ totalX = 0;
+ totalY = 0;
+ lastPos = startCoords;
+ eventHandlers['start'] && eventHandlers['start'](startCoords, event);
+ });
+ var events = getEvents(pointerTypes, 'cancel');
+ if (events) {
+ element.on(events, function(event) {
+ active = false;
+ eventHandlers['cancel'] && eventHandlers['cancel'](event);
+ });
+ }
+
+ element.on(getEvents(pointerTypes, 'move'), function(event) {
+ if (!active) return;
+
+ // Android will send a touchcancel if it thinks we're starting to scroll.
+ // So when the total distance (+ or - or both) exceeds 10px in either direction,
+ // we either:
+ // - On totalX > totalY, we send preventDefault() and treat this as a swipe.
+ // - On totalY > totalX, we let the browser handle it as a scroll.
+
+ if (!startCoords) return;
+ var coords = getCoordinates(event);
+
+ totalX += Math.abs(coords.x - lastPos.x);
+ totalY += Math.abs(coords.y - lastPos.y);
+
+ lastPos = coords;
+
+ if (totalX < MOVE_BUFFER_RADIUS && totalY < MOVE_BUFFER_RADIUS) {
+ return;
+ }
+
+ // One of totalX or totalY has exceeded the buffer, so decide on swipe vs. scroll.
+ if (totalY > totalX) {
+ // Allow native scrolling to take over.
+ active = false;
+ eventHandlers['cancel'] && eventHandlers['cancel'](event);
+ return;
+ } else {
+ // Prevent the browser from scrolling.
+ event.preventDefault();
+ eventHandlers['move'] && eventHandlers['move'](coords, event);
+ }
+ });
+
+ element.on(getEvents(pointerTypes, 'end'), function(event) {
+ if (!active) return;
+ active = false;
+ eventHandlers['end'] && eventHandlers['end'](getCoordinates(event), event);
+ });
+ }
+ };
+}]);
+
+/* global ngTouch: false,
+ nodeName_: false
+*/
+
+/**
+ * @ngdoc directive
+ * @name ngClick
+ * @deprecated
+ *
+ * @description
+ * <div class="alert alert-danger">
+ * **DEPRECATION NOTICE**: Beginning with Angular 1.5, this directive is deprecated and by default **disabled**.
+ * The directive will receive no further support and might be removed from future releases.
+ * If you need the directive, you can enable it with the {@link ngTouch.$touchProvider $touchProvider#ngClickOverrideEnabled}
+ * function. We also recommend that you migrate to [FastClick](https://github.com/ftlabs/fastclick).
+ * To learn more about the 300ms delay, this [Telerik article](http://developer.telerik.com/featured/300-ms-click-delay-ios-8/)
+ * gives a good overview.
+ * </div>
+ * A more powerful replacement for the default ngClick designed to be used on touchscreen
+ * devices. Most mobile browsers wait about 300ms after a tap-and-release before sending
+ * the click event. This version handles them immediately, and then prevents the
+ * following click event from propagating.
+ *
+ * Requires the {@link ngTouch `ngTouch`} module to be installed.
+ *
+ * This directive can fall back to using an ordinary click event, and so works on desktop
+ * browsers as well as mobile.
+ *
+ * This directive also sets the CSS class `ng-click-active` while the element is being held
+ * down (by a mouse click or touch) so you can restyle the depressed element if you wish.
+ *
+ * @element ANY
+ * @param {expression} ngClick {@link guide/expression Expression} to evaluate
+ * upon tap. (Event object is available as `$event`)
+ *
+ * @example
+ <example module="ngClickExample" deps="angular-touch.js">
+ <file name="index.html">
+ <button ng-click="count = count + 1" ng-init="count=0">
+ Increment
+ </button>
+ count: {{ count }}
+ </file>
+ <file name="script.js">
+ angular.module('ngClickExample', ['ngTouch']);
+ </file>
+ </example>
+ */
+
+var ngTouchClickDirectiveFactory = ['$parse', '$timeout', '$rootElement',
+ function($parse, $timeout, $rootElement) {
+ var TAP_DURATION = 750; // Shorter than 750ms is a tap, longer is a taphold or drag.
+ var MOVE_TOLERANCE = 12; // 12px seems to work in most mobile browsers.
+ var PREVENT_DURATION = 2500; // 2.5 seconds maximum from preventGhostClick call to click
+ var CLICKBUSTER_THRESHOLD = 25; // 25 pixels in any dimension is the limit for busting clicks.
+
+ var ACTIVE_CLASS_NAME = 'ng-click-active';
+ var lastPreventedTime;
+ var touchCoordinates;
+ var lastLabelClickCoordinates;
+
+
+ // TAP EVENTS AND GHOST CLICKS
+ //
+ // Why tap events?
+ // Mobile browsers detect a tap, then wait a moment (usually ~300ms) to see if you're
+ // double-tapping, and then fire a click event.
+ //
+ // This delay sucks and makes mobile apps feel unresponsive.
+ // So we detect touchstart, touchcancel and touchend ourselves and determine when
+ // the user has tapped on something.
+ //
+ // What happens when the browser then generates a click event?
+ // The browser, of course, also detects the tap and fires a click after a delay. This results in
+ // tapping/clicking twice. We do "clickbusting" to prevent it.
+ //
+ // How does it work?
+ // We attach global touchstart and click handlers, that run during the capture (early) phase.
+ // So the sequence for a tap is:
+ // - global touchstart: Sets an "allowable region" at the point touched.
+ // - element's touchstart: Starts a touch
+ // (- touchcancel ends the touch, no click follows)
+ // - element's touchend: Determines if the tap is valid (didn't move too far away, didn't hold
+ // too long) and fires the user's tap handler. The touchend also calls preventGhostClick().
+ // - preventGhostClick() removes the allowable region the global touchstart created.
+ // - The browser generates a click event.
+ // - The global click handler catches the click, and checks whether it was in an allowable region.
+ // - If preventGhostClick was called, the region will have been removed, the click is busted.
+ // - If the region is still there, the click proceeds normally. Therefore clicks on links and
+ // other elements without ngTap on them work normally.
+ //
+ // This is an ugly, terrible hack!
+ // Yeah, tell me about it. The alternatives are using the slow click events, or making our users
+ // deal with the ghost clicks, so I consider this the least of evils. Fortunately Angular
+ // encapsulates this ugly logic away from the user.
+ //
+ // Why not just put click handlers on the element?
+ // We do that too, just to be sure. If the tap event caused the DOM to change,
+ // it is possible another element is now in that position. To take account for these possibly
+ // distinct elements, the handlers are global and care only about coordinates.
+
+ // Checks if the coordinates are close enough to be within the region.
+ function hit(x1, y1, x2, y2) {
+ return Math.abs(x1 - x2) < CLICKBUSTER_THRESHOLD && Math.abs(y1 - y2) < CLICKBUSTER_THRESHOLD;
+ }
+
+ // Checks a list of allowable regions against a click location.
+ // Returns true if the click should be allowed.
+ // Splices out the allowable region from the list after it has been used.
+ function checkAllowableRegions(touchCoordinates, x, y) {
+ for (var i = 0; i < touchCoordinates.length; i += 2) {
+ if (hit(touchCoordinates[i], touchCoordinates[i + 1], x, y)) {
+ touchCoordinates.splice(i, i + 2);
+ return true; // allowable region
+ }
+ }
+ return false; // No allowable region; bust it.
+ }
+
+ // Global click handler that prevents the click if it's in a bustable zone and preventGhostClick
+ // was called recently.
+ function onClick(event) {
+ if (Date.now() - lastPreventedTime > PREVENT_DURATION) {
+ return; // Too old.
+ }
+
+ var touches = event.touches && event.touches.length ? event.touches : [event];
+ var x = touches[0].clientX;
+ var y = touches[0].clientY;
+ // Work around desktop Webkit quirk where clicking a label will fire two clicks (on the label
+ // and on the input element). Depending on the exact browser, this second click we don't want
+ // to bust has either (0,0), negative coordinates, or coordinates equal to triggering label
+ // click event
+ if (x < 1 && y < 1) {
+ return; // offscreen
+ }
+ if (lastLabelClickCoordinates &&
+ lastLabelClickCoordinates[0] === x && lastLabelClickCoordinates[1] === y) {
+ return; // input click triggered by label click
+ }
+ // reset label click coordinates on first subsequent click
+ if (lastLabelClickCoordinates) {
+ lastLabelClickCoordinates = null;
+ }
+ // remember label click coordinates to prevent click busting of trigger click event on input
+ if (nodeName_(event.target) === 'label') {
+ lastLabelClickCoordinates = [x, y];
+ }
+
+ // Look for an allowable region containing this click.
+ // If we find one, that means it was created by touchstart and not removed by
+ // preventGhostClick, so we don't bust it.
+ if (checkAllowableRegions(touchCoordinates, x, y)) {
+ return;
+ }
+
+ // If we didn't find an allowable region, bust the click.
+ event.stopPropagation();
+ event.preventDefault();
+
+ // Blur focused form elements
+ event.target && event.target.blur && event.target.blur();
+ }
+
+
+ // Global touchstart handler that creates an allowable region for a click event.
+ // This allowable region can be removed by preventGhostClick if we want to bust it.
+ function onTouchStart(event) {
+ var touches = event.touches && event.touches.length ? event.touches : [event];
+ var x = touches[0].clientX;
+ var y = touches[0].clientY;
+ touchCoordinates.push(x, y);
+
+ $timeout(function() {
+ // Remove the allowable region.
+ for (var i = 0; i < touchCoordinates.length; i += 2) {
+ if (touchCoordinates[i] == x && touchCoordinates[i + 1] == y) {
+ touchCoordinates.splice(i, i + 2);
+ return;
+ }
+ }
+ }, PREVENT_DURATION, false);
+ }
+
+ // On the first call, attaches some event handlers. Then whenever it gets called, it creates a
+ // zone around the touchstart where clicks will get busted.
+ function preventGhostClick(x, y) {
+ if (!touchCoordinates) {
+ $rootElement[0].addEventListener('click', onClick, true);
+ $rootElement[0].addEventListener('touchstart', onTouchStart, true);
+ touchCoordinates = [];
+ }
+
+ lastPreventedTime = Date.now();
+
+ checkAllowableRegions(touchCoordinates, x, y);
+ }
+
+ // Actual linking function.
+ return function(scope, element, attr) {
+ var clickHandler = $parse(attr.ngClick),
+ tapping = false,
+ tapElement, // Used to blur the element after a tap.
+ startTime, // Used to check if the tap was held too long.
+ touchStartX,
+ touchStartY;
+
+ function resetState() {
+ tapping = false;
+ element.removeClass(ACTIVE_CLASS_NAME);
+ }
+
+ element.on('touchstart', function(event) {
+ tapping = true;
+ tapElement = event.target ? event.target : event.srcElement; // IE uses srcElement.
+ // Hack for Safari, which can target text nodes instead of containers.
+ if (tapElement.nodeType == 3) {
+ tapElement = tapElement.parentNode;
+ }
+
+ element.addClass(ACTIVE_CLASS_NAME);
+
+ startTime = Date.now();
+
+ // Use jQuery originalEvent
+ var originalEvent = event.originalEvent || event;
+ var touches = originalEvent.touches && originalEvent.touches.length ? originalEvent.touches : [originalEvent];
+ var e = touches[0];
+ touchStartX = e.clientX;
+ touchStartY = e.clientY;
+ });
+
+ element.on('touchcancel', function(event) {
+ resetState();
+ });
+
+ element.on('touchend', function(event) {
+ var diff = Date.now() - startTime;
+
+ // Use jQuery originalEvent
+ var originalEvent = event.originalEvent || event;
+ var touches = (originalEvent.changedTouches && originalEvent.changedTouches.length) ?
+ originalEvent.changedTouches :
+ ((originalEvent.touches && originalEvent.touches.length) ? originalEvent.touches : [originalEvent]);
+ var e = touches[0];
+ var x = e.clientX;
+ var y = e.clientY;
+ var dist = Math.sqrt(Math.pow(x - touchStartX, 2) + Math.pow(y - touchStartY, 2));
+
+ if (tapping && diff < TAP_DURATION && dist < MOVE_TOLERANCE) {
+ // Call preventGhostClick so the clickbuster will catch the corresponding click.
+ preventGhostClick(x, y);
+
+ // Blur the focused element (the button, probably) before firing the callback.
+ // This doesn't work perfectly on Android Chrome, but seems to work elsewhere.
+ // I couldn't get anything to work reliably on Android Chrome.
+ if (tapElement) {
+ tapElement.blur();
+ }
+
+ if (!angular.isDefined(attr.disabled) || attr.disabled === false) {
+ element.triggerHandler('click', [event]);
+ }
+ }
+
+ resetState();
+ });
+
+ // Hack for iOS Safari's benefit. It goes searching for onclick handlers and is liable to click
+ // something else nearby.
+ element.onclick = function(event) { };
+
+ // Actual click handler.
+ // There are three different kinds of clicks, only two of which reach this point.
+ // - On desktop browsers without touch events, their clicks will always come here.
+ // - On mobile browsers, the simulated "fast" click will call this.
+ // - But the browser's follow-up slow click will be "busted" before it reaches this handler.
+ // Therefore it's safe to use this directive on both mobile and desktop.
+ element.on('click', function(event, touchend) {
+ scope.$apply(function() {
+ clickHandler(scope, {$event: (touchend || event)});
+ });
+ });
+
+ element.on('mousedown', function(event) {
+ element.addClass(ACTIVE_CLASS_NAME);
+ });
+
+ element.on('mousemove mouseup', function(event) {
+ element.removeClass(ACTIVE_CLASS_NAME);
+ });
+
+ };
+}];
+
+/* global ngTouch: false */
+
+/**
+ * @ngdoc directive
+ * @name ngSwipeLeft
+ *
+ * @description
+ * Specify custom behavior when an element is swiped to the left on a touchscreen device.
+ * A leftward swipe is a quick, right-to-left slide of the finger.
+ * Though ngSwipeLeft is designed for touch-based devices, it will work with a mouse click and drag
+ * too.
+ *
+ * To disable the mouse click and drag functionality, add `ng-swipe-disable-mouse` to
+ * the `ng-swipe-left` or `ng-swipe-right` DOM Element.
+ *
+ * Requires the {@link ngTouch `ngTouch`} module to be installed.
+ *
+ * @element ANY
+ * @param {expression} ngSwipeLeft {@link guide/expression Expression} to evaluate
+ * upon left swipe. (Event object is available as `$event`)
+ *
+ * @example
+ <example module="ngSwipeLeftExample" deps="angular-touch.js">
+ <file name="index.html">
+ <div ng-show="!showActions" ng-swipe-left="showActions = true">
+ Some list content, like an email in the inbox
+ </div>
+ <div ng-show="showActions" ng-swipe-right="showActions = false">
+ <button ng-click="reply()">Reply</button>
+ <button ng-click="delete()">Delete</button>
+ </div>
+ </file>
+ <file name="script.js">
+ angular.module('ngSwipeLeftExample', ['ngTouch']);
+ </file>
+ </example>
+ */
+
+/**
+ * @ngdoc directive
+ * @name ngSwipeRight
+ *
+ * @description
+ * Specify custom behavior when an element is swiped to the right on a touchscreen device.
+ * A rightward swipe is a quick, left-to-right slide of the finger.
+ * Though ngSwipeRight is designed for touch-based devices, it will work with a mouse click and drag
+ * too.
+ *
+ * Requires the {@link ngTouch `ngTouch`} module to be installed.
+ *
+ * @element ANY
+ * @param {expression} ngSwipeRight {@link guide/expression Expression} to evaluate
+ * upon right swipe. (Event object is available as `$event`)
+ *
+ * @example
+ <example module="ngSwipeRightExample" deps="angular-touch.js">
+ <file name="index.html">
+ <div ng-show="!showActions" ng-swipe-left="showActions = true">
+ Some list content, like an email in the inbox
+ </div>
+ <div ng-show="showActions" ng-swipe-right="showActions = false">
+ <button ng-click="reply()">Reply</button>
+ <button ng-click="delete()">Delete</button>
+ </div>
+ </file>
+ <file name="script.js">
+ angular.module('ngSwipeRightExample', ['ngTouch']);
+ </file>
+ </example>
+ */
+
+function makeSwipeDirective(directiveName, direction, eventName) {
+ ngTouch.directive(directiveName, ['$parse', '$swipe', function($parse, $swipe) {
+ // The maximum vertical delta for a swipe should be less than 75px.
+ var MAX_VERTICAL_DISTANCE = 75;
+ // Vertical distance should not be more than a fraction of the horizontal distance.
+ var MAX_VERTICAL_RATIO = 0.3;
+ // At least a 30px lateral motion is necessary for a swipe.
+ var MIN_HORIZONTAL_DISTANCE = 30;
+
+ return function(scope, element, attr) {
+ var swipeHandler = $parse(attr[directiveName]);
+
+ var startCoords, valid;
+
+ function validSwipe(coords) {
+ // Check that it's within the coordinates.
+ // Absolute vertical distance must be within tolerances.
+ // Horizontal distance, we take the current X - the starting X.
+ // This is negative for leftward swipes and positive for rightward swipes.
+ // After multiplying by the direction (-1 for left, +1 for right), legal swipes
+ // (ie. same direction as the directive wants) will have a positive delta and
+ // illegal ones a negative delta.
+ // Therefore this delta must be positive, and larger than the minimum.
+ if (!startCoords) return false;
+ var deltaY = Math.abs(coords.y - startCoords.y);
+ var deltaX = (coords.x - startCoords.x) * direction;
+ return valid && // Short circuit for already-invalidated swipes.
+ deltaY < MAX_VERTICAL_DISTANCE &&
+ deltaX > 0 &&
+ deltaX > MIN_HORIZONTAL_DISTANCE &&
+ deltaY / deltaX < MAX_VERTICAL_RATIO;
+ }
+
+ var pointerTypes = ['touch'];
+ if (!angular.isDefined(attr['ngSwipeDisableMouse'])) {
+ pointerTypes.push('mouse');
+ }
+ $swipe.bind(element, {
+ 'start': function(coords, event) {
+ startCoords = coords;
+ valid = true;
+ },
+ 'cancel': function(event) {
+ valid = false;
+ },
+ 'end': function(coords, event) {
+ if (validSwipe(coords)) {
+ scope.$apply(function() {
+ element.triggerHandler(eventName);
+ swipeHandler(scope, {$event: event});
+ });
+ }
+ }
+ }, pointerTypes);
+ };
+ }]);
+}
+
+// Left is negative X-coordinate, right is positive.
+makeSwipeDirective('ngSwipeLeft', -1, 'swipeleft');
+makeSwipeDirective('ngSwipeRight', 1, 'swiperight');
+
+
+
+})(window, window.angular);