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GUAC-901: Add touch module and guacTouchDrag directive for handling drag gestures.

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This commit is contained in:
Michael Jumper
2014-12-20 22:55:39 -08:00
parent bda9751bd9
commit 2623ba3196
1 changed files with 23 additions and 20 deletions
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43
guacamole/src/main/webapp/app/touch/directives/guacPan.js → guacamole/src/main/webapp/app/touch/directives/guacTouchDrag.js
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@@ -21,18 +21,17 @@
*/
/**
* A directive which allows handling of panning gestures on a particular
* element.
* A directive which allows handling of drag gestures on a particular element.
*/
angular.module('touch').directive('guacPan', [function guacPan() {
angular.module('touch').directive('guacTouchDrag', [function guacTouchDrag() {
return {
restrict: 'A',
scope: {
/**
* Called as during a panning gesture as the user's finger is
* placed upon the element, moves, and is lifted from the element.
* Called during a drag gesture as the user's finger is placed upon
* the element, moves, and is lifted from the element.
*
* @event
* @param {Boolean} inProgress
@@ -42,10 +41,10 @@ angular.module('touch').directive('guacPan', [function guacPan() {
* false.
*
* @param {Number} startX
* The X location at which the panning gesture began.
* The X location at which the drag gesture began.
*
* @param {Number} startY
* The Y location at which the panning gesture began.
* The Y location at which the drag gesture began.
*
* @param {Number} currentX
* The current X location of the user's finger.
@@ -60,15 +59,19 @@ angular.module('touch').directive('guacPan', [function guacPan() {
* @param {Number} deltaY
* The difference in Y location relative to the start of the
* gesture.
*
* @return {Boolean}
* false if the default action of the touch event should be
* prevented, any other value otherwise.
*/
guacPan : '='
guacTouchDrag : '='
},
link: function guacPan($scope, $element) {
link: function guacTouchDrag($scope, $element) {
/**
* The element which will register the panning gesture.
* The element which will register the drag gesture.
*
* @type Element
*/
@@ -127,7 +130,6 @@ angular.module('touch').directive('guacPan', [function guacPan() {
element.addEventListener("touchmove", function(e) {
if (e.touches.length === 1) {
e.preventDefault();
e.stopPropagation();
// Get touch location
@@ -151,10 +153,11 @@ angular.module('touch').directive('guacPan', [function guacPan() {
currentY = y;
}
// Signal start/change in panning gesture
if (inProgress && $scope.guacPan) {
$scope.$apply(function panChanged() {
$scope.guacPan(true, startX, startY, currentX, currentY, deltaX, deltaY);
// Signal start/change in drag gesture
if (inProgress && $scope.guacTouchDrag) {
$scope.$apply(function dragChanged() {
if ($scope.guacTouchDrag(true, startX, startY, currentX, currentY, deltaX, deltaY) === false)
e.preventDefault();
});
}
@@ -166,13 +169,13 @@ angular.module('touch').directive('guacPan', [function guacPan() {
if (startX && startY && e.touches.length === 0) {
e.preventDefault();
e.stopPropagation();
// Signal end of panning gesture
if (inProgress && $scope.guacPan) {
$scope.$apply(function panComplete() {
$scope.guacPan(true, startX, startY, currentX, currentY, deltaX, deltaY);
// Signal end of drag gesture
if (inProgress && $scope.guacTouchDrag) {
$scope.$apply(function dragComplete() {
if ($scope.guacTouchDrag(true, startX, startY, currentX, currentY, deltaX, deltaY === false))
e.preventDefault();
});
}