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angular-ui-tree.js
1829 lines (1547 loc) · 66.3 KB
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angular-ui-tree.js
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/**
* @license Angular UI Tree v2.22.5
* (c) 2010-2017. https://github.com/angular-ui-tree/angular-ui-tree
* License: MIT
*/
(function () {
'use strict';
angular.module('ui.tree', [])
.constant('treeConfig', {
treeClass: 'angular-ui-tree',
emptyTreeClass: 'angular-ui-tree-empty',
hiddenClass: 'angular-ui-tree-hidden',
nodesClass: 'angular-ui-tree-nodes',
nodeClass: 'angular-ui-tree-node',
handleClass: 'angular-ui-tree-handle',
placeholderClass: 'angular-ui-tree-placeholder',
dragClass: 'angular-ui-tree-drag',
dragThreshold: 3,
defaultCollapsed: false,
appendChildOnHover: true
});
})();
(function () {
'use strict';
angular.module('ui.tree')
.controller('TreeHandleController', ['$scope', '$element',
function ($scope, $element) {
this.scope = $scope;
$scope.$element = $element;
$scope.$nodeScope = null;
$scope.$type = 'uiTreeHandle';
}
]);
})();
(function () {
'use strict';
angular.module('ui.tree')
.controller('TreeNodeController', ['$scope', '$element',
function ($scope, $element) {
this.scope = $scope;
$scope.$element = $element;
$scope.$modelValue = null; // Model value for node;
$scope.$parentNodeScope = null; // uiTreeNode Scope of parent node;
$scope.$childNodesScope = null; // uiTreeNodes Scope of child nodes.
$scope.$parentNodesScope = null; // uiTreeNodes Scope of parent nodes.
$scope.$treeScope = null; // uiTree scope
$scope.$handleScope = null; // it's handle scope
$scope.$type = 'uiTreeNode';
$scope.$$allowNodeDrop = false;
$scope.collapsed = false;
$scope.expandOnHover = false;
//Called by uiTreeNode Directive on load.
$scope.init = function (controllersArr) {
var treeNodesCtrl = controllersArr[0];
$scope.$treeScope = controllersArr[1] ? controllersArr[1].scope : null;
//Find the scope of it's parent node.
$scope.$parentNodeScope = treeNodesCtrl.scope.$nodeScope;
//modelValue for current node.
$scope.$modelValue = treeNodesCtrl.scope.$modelValue[$scope.$index];
$scope.$parentNodesScope = treeNodesCtrl.scope;
//Init sub nodes.
treeNodesCtrl.scope.initSubNode($scope);
$element.on('$destroy', function () {
//Destroy sub nodes.
treeNodesCtrl.scope.destroySubNode($scope);
});
};
//Return the index of child node in parent node (nodesScope).
$scope.index = function () {
return $scope.$parentNodesScope.$modelValue.indexOf($scope.$modelValue);
};
$scope.dragEnabled = function () {
return !($scope.$treeScope && !$scope.$treeScope.dragEnabled);
};
$scope.isSibling = function (targetNode) {
return $scope.$parentNodesScope == targetNode.$parentNodesScope;
};
$scope.isChild = function (targetNode) {
var nodes = $scope.childNodes();
return nodes && nodes.indexOf(targetNode) > -1;
};
//TODO(jcarter): This method is on uiTreeHelper already.
$scope.prev = function () {
var index = $scope.index();
if (index > 0) {
return $scope.siblings()[index - 1];
}
return null;
};
//Calls childNodes on parent.
$scope.siblings = function () {
return $scope.$parentNodesScope.childNodes();
};
$scope.childNodesCount = function () {
return $scope.childNodes() ? $scope.childNodes().length : 0;
};
$scope.hasChild = function () {
return $scope.childNodesCount() > 0;
};
$scope.childNodes = function () {
return $scope.$childNodesScope && $scope.$childNodesScope.$modelValue ?
$scope.$childNodesScope.childNodes() :
null;
};
$scope.accept = function (sourceNode, destIndex) {
return $scope.$childNodesScope &&
$scope.$childNodesScope.$modelValue &&
$scope.$childNodesScope.accept(sourceNode, destIndex);
};
$scope.remove = function () {
return $scope.$parentNodesScope.removeNode($scope);
};
$scope.toggle = function () {
$scope.collapsed = !$scope.collapsed;
$scope.$treeScope.$callbacks.toggle($scope.collapsed, $scope);
};
$scope.collapse = function () {
$scope.collapsed = true;
};
$scope.expand = function () {
$scope.collapsed = false;
};
$scope.depth = function () {
var parentNode = $scope.$parentNodeScope;
if (parentNode) {
return parentNode.depth() + 1;
}
return 1;
};
/**
* Returns the depth of the deepest subtree under this node
* @param scope a TreeNodesController scope object
* @returns Depth of all nodes *beneath* this node. If scope belongs to a leaf node, the
* result is 0 (it has no subtree).
*/
function countSubTreeDepth(scope) {
if (!scope) {
return 0;
}
var thisLevelDepth = 0,
childNodes = scope.childNodes(),
childNode,
childDepth,
i;
if (!childNodes || childNodes.length === 0) {
return 0;
}
for (i = childNodes.length - 1; i >= 0 ; i--) {
childNode = childNodes[i],
childDepth = 1 + countSubTreeDepth(childNode);
thisLevelDepth = Math.max(thisLevelDepth, childDepth);
}
return thisLevelDepth;
}
$scope.maxSubDepth = function () {
return $scope.$childNodesScope ? countSubTreeDepth($scope.$childNodesScope) : 0;
};
}
]);
})();
(function () {
'use strict';
angular.module('ui.tree')
.controller('TreeNodesController', ['$scope', '$element',
function ($scope, $element) {
this.scope = $scope;
$scope.$element = $element;
$scope.$modelValue = null;
$scope.$nodeScope = null; // the scope of node which the nodes belongs to
$scope.$treeScope = null;
$scope.$type = 'uiTreeNodes';
$scope.$nodesMap = {};
$scope.nodropEnabled = false;
$scope.maxDepth = 0;
$scope.cloneEnabled = false;
$scope.initSubNode = function (subNode) {
if (!subNode.$modelValue) {
return null;
}
$scope.$nodesMap[subNode.$modelValue.$$hashKey] = subNode;
};
$scope.destroySubNode = function (subNode) {
if (!subNode.$modelValue) {
return null;
}
$scope.$nodesMap[subNode.$modelValue.$$hashKey] = null;
};
$scope.accept = function (sourceNode, destIndex) {
return $scope.$treeScope.$callbacks.accept(sourceNode, $scope, destIndex);
};
$scope.beforeDrag = function (sourceNode) {
return $scope.$treeScope.$callbacks.beforeDrag(sourceNode);
};
$scope.isParent = function (node) {
return node.$parentNodesScope == $scope;
};
$scope.hasChild = function () {
return $scope.$modelValue.length > 0;
};
$scope.safeApply = function (fn) {
var phase = this.$root.$$phase;
if (phase == '$apply' || phase == '$digest') {
if (fn && (typeof (fn) === 'function')) {
fn();
}
} else {
this.$apply(fn);
}
};
//Called in apply method of UiTreeHelper.dragInfo.
$scope.removeNode = function (node) {
var index = $scope.$modelValue.indexOf(node.$modelValue);
if (index > -1) {
$scope.safeApply(function () {
$scope.$modelValue.splice(index, 1)[0];
});
return $scope.$treeScope.$callbacks.removed(node);
}
return null;
};
//Called in apply method of UiTreeHelper.dragInfo.
$scope.insertNode = function (index, nodeData) {
$scope.safeApply(function () {
$scope.$modelValue.splice(index, 0, nodeData);
});
};
$scope.childNodes = function () {
var i, nodes = [];
if ($scope.$modelValue) {
for (i = 0; i < $scope.$modelValue.length; i++) {
nodes.push($scope.$nodesMap[$scope.$modelValue[i].$$hashKey]);
}
}
return nodes;
};
$scope.depth = function () {
if ($scope.$nodeScope) {
return $scope.$nodeScope.depth();
}
return 0; // if it has no $nodeScope, it's root
};
// check if depth limit has reached
$scope.outOfDepth = function (sourceNode) {
var maxDepth = $scope.maxDepth || $scope.$treeScope.maxDepth;
if (maxDepth > 0) {
return $scope.depth() + sourceNode.maxSubDepth() + 1 > maxDepth;
}
return false;
};
}
]);
})();
(function () {
'use strict';
angular.module('ui.tree')
.controller('TreeController', ['$scope', '$element',
function ($scope, $element) {
this.scope = $scope;
$scope.$element = $element;
$scope.$nodesScope = null; // root nodes
$scope.$type = 'uiTree';
$scope.$emptyElm = null;
$scope.$callbacks = null;
$scope.dragEnabled = true;
$scope.emptyPlaceholderEnabled = true;
$scope.maxDepth = 0;
$scope.dragDelay = 0;
$scope.cloneEnabled = false;
$scope.nodropEnabled = false;
// Check if it's a empty tree
$scope.isEmpty = function () {
return ($scope.$nodesScope && $scope.$nodesScope.$modelValue
&& $scope.$nodesScope.$modelValue.length === 0);
};
// add placeholder to empty tree
$scope.place = function (placeElm) {
$scope.$nodesScope.$element.append(placeElm);
$scope.$emptyElm.remove();
};
this.resetEmptyElement = function () {
if ((!$scope.$nodesScope.$modelValue || $scope.$nodesScope.$modelValue.length === 0) &&
$scope.emptyPlaceholderEnabled) {
$element.append($scope.$emptyElm);
} else {
$scope.$emptyElm.remove();
}
};
$scope.resetEmptyElement = this.resetEmptyElement;
}
]);
})();
(function () {
'use strict';
angular.module('ui.tree')
.directive('uiTree', ['treeConfig', '$window',
function (treeConfig, $window) {
return {
restrict: 'A',
scope: true,
controller: 'TreeController',
link: function (scope, element, attrs, ctrl) {
var callbacks = {
accept: null,
beforeDrag: null
},
config = {},
tdElm,
$trElm,
emptyElmColspan;
//Adding configured class to uiTree.
angular.extend(config, treeConfig);
if (config.treeClass) {
element.addClass(config.treeClass);
}
//Determining if uiTree is on a table.
if (element.prop('tagName').toLowerCase() === 'table') {
scope.$emptyElm = angular.element($window.document.createElement('tr'));
$trElm = element.find('tr');
//If we can find a tr, then we can use its td children as the empty element colspan.
if ($trElm.length > 0) {
emptyElmColspan = angular.element($trElm).children().length;
} else {
//If not, by setting a huge colspan we make sure it takes full width.
//TODO(jcarter): Check for negative side effects.
emptyElmColspan = 1000000;
}
tdElm = angular.element($window.document.createElement('td'))
.attr('colspan', emptyElmColspan);
scope.$emptyElm.append(tdElm);
} else {
scope.$emptyElm = angular.element($window.document.createElement('div'));
}
if (config.emptyTreeClass) {
scope.$emptyElm.addClass(config.emptyTreeClass);
}
scope.$watch('$nodesScope.$modelValue.length', function (val) {
if (!angular.isNumber(val)) {
return;
}
ctrl.resetEmptyElement();
}, true);
scope.$watch(attrs.dragEnabled, function (val) {
if ((typeof val) == 'boolean') {
scope.dragEnabled = val;
}
});
scope.$watch(attrs.emptyPlaceholderEnabled, function (val) {
if ((typeof val) == 'boolean') {
scope.emptyPlaceholderEnabled = val;
ctrl.resetEmptyElement();
}
});
scope.$watch(attrs.nodropEnabled, function (val) {
if ((typeof val) == 'boolean') {
scope.nodropEnabled = val;
}
});
scope.$watch(attrs.cloneEnabled, function (val) {
if ((typeof val) == 'boolean') {
scope.cloneEnabled = val;
}
});
scope.$watch(attrs.maxDepth, function (val) {
if ((typeof val) == 'number') {
scope.maxDepth = val;
}
});
scope.$watch(attrs.dragDelay, function (val) {
if ((typeof val) == 'number') {
scope.dragDelay = val;
}
});
/**
* Callback checks if the destination node can accept the dragged node.
* By default, ui-tree will check that 'data-nodrop-enabled' is not set for the
* destination ui-tree-nodes, and that the 'max-depth' attribute will not be exceeded
* if it is set on the ui-tree or ui-tree-nodes.
* This callback can be overridden, but callers must manually enforce nodrop and max-depth
* themselves if they need those to be enforced.
* @param sourceNodeScope Scope of the ui-tree-node being dragged
* @param destNodesScope Scope of the ui-tree-nodes where the node is hovering
* @param destIndex Index in the destination nodes array where the source node will drop
* @returns {boolean} True if the node is permitted to be dropped here
*/
callbacks.accept = function (sourceNodeScope, destNodesScope, destIndex) {
return !(destNodesScope.nodropEnabled || destNodesScope.$treeScope.nodropEnabled || destNodesScope.outOfDepth(sourceNodeScope));
};
callbacks.beforeDrag = function (sourceNodeScope) {
return true;
};
callbacks.expandTimeoutStart = function()
{
};
callbacks.expandTimeoutCancel = function()
{
};
callbacks.expandTimeoutEnd = function()
{
};
callbacks.removed = function (node) {
};
/**
* Callback is fired when a node is successfully dropped in a new location
* @param event
*/
callbacks.dropped = function (event) {
};
/**
* Callback is fired each time the user starts dragging a node
* @param event
*/
callbacks.dragStart = function (event) {
};
/**
* Callback is fired each time a dragged node is moved with the mouse/touch.
* @param event
*/
callbacks.dragMove = function (event) {
};
/**
* Callback is fired when the tree exits drag mode. If the user dropped a node, the drop may have been
* accepted or reverted.
* @param event
*/
callbacks.dragStop = function (event) {
};
/**
* Callback is fired when a user drops a node (but prior to processing the drop action)
* beforeDrop can return a Promise, truthy, or falsy (returning nothing is falsy).
* If it returns falsy, or a resolve Promise, the node move is accepted
* If it returns truthy, or a rejected Promise, the node move is reverted
* @param event
* @returns {Boolean|Promise} Truthy (or rejected Promise) to cancel node move; falsy (or resolved promise)
*/
callbacks.beforeDrop = function (event) {
};
/**
* Callback is fired when a user toggles node (but after processing the toggle action)
* @param sourceNodeScope
* @param collapsed
*/
callbacks.toggle = function (collapsed, sourceNodeScope) {
};
scope.$watch(attrs.uiTree, function (newVal, oldVal) {
angular.forEach(newVal, function (value, key) {
if (callbacks[key]) {
if (typeof value === 'function') {
callbacks[key] = value;
}
}
});
scope.$callbacks = callbacks;
}, true);
}
};
}
]);
})();
(function () {
'use strict';
angular.module('ui.tree')
.directive('uiTreeHandle', ['treeConfig',
function (treeConfig) {
return {
require: '^uiTreeNode',
restrict: 'A',
scope: true,
controller: 'TreeHandleController',
link: function (scope, element, attrs, treeNodeCtrl) {
var config = {};
angular.extend(config, treeConfig);
if (config.handleClass) {
element.addClass(config.handleClass);
}
// connect with the tree node.
if (scope != treeNodeCtrl.scope) {
scope.$nodeScope = treeNodeCtrl.scope;
treeNodeCtrl.scope.$handleScope = scope;
}
}
};
}
]);
})();
(function () {
'use strict';
angular.module('ui.tree')
.directive('uiTreeNode', ['treeConfig', 'UiTreeHelper', '$window', '$document', '$timeout', '$q',
function (treeConfig, UiTreeHelper, $window, $document, $timeout, $q) {
return {
require: ['^uiTreeNodes', '^uiTree'],
restrict: 'A',
controller: 'TreeNodeController',
link: function (scope, element, attrs, controllersArr) {
var config = {},
hasTouch = 'ontouchstart' in window,
firstMoving,
dragInfo,
pos,
placeElm,
hiddenPlaceElm,
dragElm,
scrollContainerElm,
unhover,
treeScope = null,
elements, // As a parameter for callbacks
dragDelaying = true,
dragStarted = false,
dragTimer = null,
body = document.body,
html = document.documentElement,
document_height,
document_width,
dragStart,
tagName,
dragMove,
dragEnd,
dragStartEvent,
dragMoveEvent,
dragEndEvent,
dragCancelEvent,
dragDelay,
bindDragStartEvents,
bindDragMoveEvents,
unbindDragMoveEvents,
keydownHandler,
isHandleChild,
el,
isUiTreeRoot,
treeOfOrigin;
//Adding configured class to ui-tree-node.
angular.extend(config, treeConfig);
if (config.nodeClass) {
element.addClass(config.nodeClass);
}
//Call init function in nodeCtrl, sets parent node and sets up sub nodes.
scope.init(controllersArr);
scope.collapsed = !!UiTreeHelper.getNodeAttribute(scope, 'collapsed') || treeConfig.defaultCollapsed;
scope.expandOnHover = !!UiTreeHelper.getNodeAttribute(scope, 'expandOnHover');
scope.scrollContainer = UiTreeHelper.getNodeAttribute(scope, 'scrollContainer') || attrs.scrollContainer || null;
scope.sourceOnly = scope.nodropEnabled || scope.$treeScope.nodropEnabled;
scope.$watch(attrs.collapsed, function (val) {
if ((typeof val) == 'boolean') {
scope.collapsed = val;
}
});
//Watches to trigger behavior based on actions and settings.
scope.$watch('collapsed', function (val) {
UiTreeHelper.setNodeAttribute(scope, 'collapsed', val);
attrs.$set('collapsed', val);
});
scope.$watch(attrs.expandOnHover, function(val) {
if ((typeof val) === 'boolean' || (typeof val) === 'number') {
scope.expandOnHover = val;
}
});
scope.$watch('expandOnHover', function (val) {
UiTreeHelper.setNodeAttribute(scope, 'expandOnHover', val);
attrs.$set('expandOnHover', val);
});
attrs.$observe('scrollContainer', function(val) {
if ((typeof val) === 'string') {
scope.scrollContainer = val;
}
});
scope.$watch('scrollContainer', function(val) {
UiTreeHelper.setNodeAttribute(scope, 'scrollContainer', val);
attrs.$set('scrollContainer', val);
scrollContainerElm = document.querySelector(val);
});
scope.$on('angular-ui-tree:collapse-all', function () {
scope.collapsed = true;
});
scope.$on('angular-ui-tree:expand-all', function () {
scope.collapsed = false;
});
/**
* Called when the user has grabbed a node and started dragging it.
*
* @param {MouseEvent} e event that is triggered by DOM.
* @return undefined?
*/
dragStart = function (e) {
//Disable right click.
if (!hasTouch && (e.button === 2 || e.which === 3)) {
return;
}
//Event has already fired in other scope.
if (e.uiTreeDragging || (e.originalEvent && e.originalEvent.uiTreeDragging)) {
return;
}
//The node being dragged.
var eventElm = angular.element(e.target),
isHandleChild,
cloneElm,
eventElmTagName,
tagName,
eventObj,
tdElm,
hStyle,
isTreeNode,
isTreeNodeHandle;
//If the target element is a child element of a ui-tree-handle,
// use the containing handle element as target element.
isHandleChild = UiTreeHelper.treeNodeHandlerContainerOfElement(eventElm);
if (isHandleChild) {
eventElm = angular.element(isHandleChild);
}
cloneElm = element.clone();
isTreeNode = UiTreeHelper.elementIsTreeNode(eventElm);
isTreeNodeHandle = UiTreeHelper.elementIsTreeNodeHandle(eventElm);
//If we are not triggering mousedown on our uiTree or any of it's parts, return.
if (!isTreeNode && !isTreeNodeHandle) {
return;
}
//If we are not triggering mousedown on our uiTree or any of it's parts, return.
if (isTreeNode && UiTreeHelper.elementContainsTreeNodeHandler(eventElm)) {
return;
}
//Dragging not allowed on inputs or buttons.
eventElmTagName = eventElm.prop('tagName').toLowerCase();
if (eventElmTagName == 'input' ||
eventElmTagName == 'textarea' ||
eventElmTagName == 'button' ||
eventElmTagName == 'select') {
return;
}
//Check if it or it's parents has a 'data-nodrag' attribute
el = angular.element(e.target);
isUiTreeRoot = el[0].attributes['ui-tree'];
while (el && el[0] && el[0] !== element && !isUiTreeRoot) {
//Checking that I can access attributes.
if (el[0].attributes) {
isUiTreeRoot = el[0].attributes['ui-tree'];
}
//If the node mark as `nodrag`, DONOT drag it.
if (UiTreeHelper.nodrag(el)) {
return;
}
el = el.parent();
}
//If users beforeDrag calback returns falsey, do not initiate.
if (!scope.beforeDrag(scope)) {
return;
}
//Set property checked at start of function to prevent running logic again.
e.uiTreeDragging = true;
if (e.originalEvent) {
e.originalEvent.uiTreeDragging = true;
}
e.preventDefault();
//Get original event if TouchEvent.
eventObj = UiTreeHelper.eventObj(e);
//Set boolean used to specify beginning of move.
firstMoving = true;
//Setting drag info properties and methods in scope of node being moved.
dragInfo = UiTreeHelper.dragInfo(scope);
//Setting original tree to adjust horizontal behavior in drag move.
treeOfOrigin = dragInfo.source.$treeScope.$id;
//Determine tage name of element ui-tree-node is on.
tagName = element.prop('tagName');
if (tagName.toLowerCase() === 'tr') {
//Create a new table column as placeholder.
placeElm = angular.element($window.document.createElement(tagName));
//Create a column placeholder and set colspan to whole row length.
tdElm = angular.element($window.document.createElement('td'))
.addClass(config.placeholderClass)
.attr('colspan', element[0].children.length);
placeElm.append(tdElm);
} else {
//If not a table just duplicate element and add placeholder class.
placeElm = angular.element($window.document.createElement(tagName))
.addClass(config.placeholderClass);
}
//Create a hidden placeholder and add class from config.
hiddenPlaceElm = angular.element($window.document.createElement(tagName));
if (config.hiddenClass) {
hiddenPlaceElm.addClass(config.hiddenClass);
}
//Getting starting position of element being moved.
pos = UiTreeHelper.positionStarted(eventObj, element);
placeElm.css('height', element.prop('offsetHeight') + 'px');
//Creating drag element to represent node.
dragElm = angular.element($window.document.createElement(scope.$parentNodesScope.$element.prop('tagName')))
.addClass(scope.$parentNodesScope.$element.attr('class')).addClass(config.dragClass);
dragElm.css('width', UiTreeHelper.width(element) + 'px');
dragElm.css('z-index', 9999);
//Prevents cursor to change rapidly in Opera 12.16 and IE when dragging an element.
hStyle = (element[0].querySelector('.angular-ui-tree-handle') || element[0]).currentStyle;
if (hStyle) {
document.body.setAttribute('ui-tree-cursor', $document.find('body').css('cursor') || '');
$document.find('body').css({'cursor': hStyle.cursor + '!important'});
}
//If tree is sourceOnly (noDragDrop) don't show placeholder when moving about it.
if (scope.sourceOnly) {
placeElm.css('display', 'none');
}
//Insert placeholder.
element.after(placeElm);
element.after(hiddenPlaceElm);
if (dragInfo.isClone() && scope.sourceOnly) {
dragElm.append(cloneElm);
} else {
dragElm.append(element);
}
//Create drag element.
$document.find('body').append(dragElm);
//Set drag elements position on screen.
dragElm.css({
'left': eventObj.pageX - pos.offsetX + 'px',
'top': eventObj.pageY - pos.offsetY + 'px'
});
elements = {
placeholder: placeElm,
dragging: dragElm
};
//Create all drag/move bindings.
bindDragMoveEvents();
//Fire dragStart callback.
scope.$apply(function () {
scope.$treeScope.$callbacks.dragStart(dragInfo.eventArgs(elements, pos));
});
//Get bounds of document.
document_height = Math.max(body.scrollHeight, body.offsetHeight, html.clientHeight, html.scrollHeight, html.offsetHeight);
document_width = Math.max(body.scrollWidth, body.offsetWidth, html.clientWidth, html.scrollWidth, html.offsetWidth);
};
dragMove = function (e) {
var eventObj = UiTreeHelper.eventObj(e),
prev,
next,
leftElmPos,
topElmPos,
top_scroll,
bottom_scroll,
scrollContainerElmRect,
target,
targetX,
targetY,
displayElm,
targetNode,
targetElm,
isEmpty,
scrollDownBy,
scrollUpBy,
targetOffset,
targetBefore,
moveWithinTree,
targetBeforeBuffer,
targetHeight,
targetChildElm,
targetChildHeight;
//If check ensures that drag element was created.
if (dragElm) {
e.preventDefault();
//Deselect anything (text, etc.) that was selected when move began.
if ($window.getSelection) {
$window.getSelection().removeAllRanges();
} else if ($window.document.selection) {
$window.document.selection.empty();
}
//Get top left positioning of element being moved.
leftElmPos = eventObj.pageX - pos.offsetX;
topElmPos = eventObj.pageY - pos.offsetY;
//dragElm can't leave the screen on the left.
if (leftElmPos < 0) {
leftElmPos = 0;
}
//dragElm can't leave the screen on the top.
if (topElmPos < 0) {
topElmPos = 0;
}
//dragElm can't leave the screen on the bottom.
if ((topElmPos + 10) > document_height) {
topElmPos = document_height - 10;
}
//dragElm can't leave the screen on the right.
if ((leftElmPos + 10) > document_width) {
leftElmPos = document_width - 10;
}
//Updating element being moved css.
dragElm.css({
'left': leftElmPos + 'px',
'top': topElmPos + 'px'
});
if (scrollContainerElm) {
//Getting position to top and bottom of container element.
scrollContainerElmRect = scrollContainerElm.getBoundingClientRect();
top_scroll = scrollContainerElm.scrollTop;
bottom_scroll = top_scroll + scrollContainerElm.clientHeight;
//To scroll down if cursor y-position is greater than the bottom position of the container vertical scroll
if (scrollContainerElmRect.bottom < eventObj.clientY && bottom_scroll < scrollContainerElm.scrollHeight) {
scrollDownBy = Math.min(scrollContainerElm.scrollHeight - bottom_scroll, 10);
scrollContainerElm.scrollTop += scrollDownBy;
}
//To scroll top if cursor y-position is less than the top position of the container vertical scroll
if (scrollContainerElmRect.top > eventObj.clientY && top_scroll > 0) {
scrollUpBy = Math.min(top_scroll, 10);
scrollContainerElm.scrollTop -= scrollUpBy;
}
} else {
//Getting position to top and bottom of page.
top_scroll = window.pageYOffset || $window.document.documentElement.scrollTop;
bottom_scroll = top_scroll + (window.innerHeight || $window.document.clientHeight || $window.document.clientHeight);
//To scroll down if cursor y-position is greater than the bottom position of the window vertical scroll
if (bottom_scroll < eventObj.pageY && bottom_scroll < document_height) {
scrollDownBy = Math.min(document_height - bottom_scroll, 10);
window.scrollBy(0, scrollDownBy);
}
//To scroll top if cursor y-position is less than the top position of the window vertical scroll
if (top_scroll > eventObj.pageY) {
scrollUpBy = Math.min(top_scroll, 10);
window.scrollBy(0, -scrollUpBy);
}
}
//Calling service to update position coordinates based on move.
UiTreeHelper.positionMoved(e, pos, firstMoving);
if (firstMoving) {
firstMoving = false;
return;
}
//Setting X point for elementFromPoint.
targetX = eventObj.pageX - ($window.pageXOffset ||
$window.document.body.scrollLeft ||
$window.document.documentElement.scrollLeft) -
($window.document.documentElement.clientLeft || 0);
targetY = eventObj.pageY - ($window.pageYOffset ||
$window.document.body.scrollTop ||
$window.document.documentElement.scrollTop) -
($window.document.documentElement.clientTop || 0);