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server-side processing data support #189

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server-side processing data support #189

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fbc83f1
server-side processing data support
Feb 5, 2016
eccc251
improve error hint
Feb 15, 2016
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59 changes: 54 additions & 5 deletions angular-tree-control.js
100644 → 100755
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,8 @@ if (typeof module !== "undefined" && typeof exports !== "undefined" && module.ex
}
(function ( angular ) {
'use strict';

var place_holder_symbol = "place_holder_symbol";

angular.module( 'treeControl', [] )
.constant('treeConfig', {
Expand Down Expand Up @@ -41,6 +43,7 @@ if (typeof module !== "undefined" && typeof exports !== "undefined" && module.ex
expandedNodes: "=?",
onSelection: "&",
onNodeToggle: "&",
onNodeRequestData: '&',
options: "=?",
orderBy: "@",
reverseOrder: "@",
Expand Down Expand Up @@ -86,6 +89,18 @@ if (typeof module !== "undefined" && typeof exports !== "undefined" && module.ex
return true;
}

function isPlaceHolderSymbol(node) {
return node.placeHolderSymbol == place_holder_symbol;
}

function isNeedExpandRequestData(node) {
return (angular.isArray(node[$scope.options.nodeChildren]) && node[$scope.options.nodeChildren].length == 1 && isPlaceHolderSymbol(node[$scope.options.nodeChildren][0]));
}

$scope.getParentNode = function(transcludedScope) {
return (transcludedScope.$parent.node === transcludedScope.synteticRoot)?null:transcludedScope.$parent.node;
};

$scope.options = $scope.options || {};
ensureDefault($scope.options, "multiSelection", false);
ensureDefault($scope.options, "nodeChildren", "children");
Expand All @@ -103,7 +118,8 @@ if (typeof module !== "undefined" && typeof exports !== "undefined" && module.ex
ensureDefault($scope.options, "isLeaf", defaultIsLeaf);
ensureDefault($scope.options, "allowDeselect", true);
ensureDefault($scope.options, "isSelectable", defaultIsSelectable);

ensureDefault($scope.options, "serverSide", false);

$scope.selectedNodes = $scope.selectedNodes || [];
$scope.expandedNodes = $scope.expandedNodes || [];
$scope.expandedNodesMap = {};
Expand Down Expand Up @@ -150,9 +166,7 @@ if (typeof module !== "undefined" && typeof exports !== "undefined" && module.ex
return !!$scope.expandedNodesMap[this.$id];
};

$scope.selectNodeHead = function() {
var transcludedScope = this;
var expanding = $scope.expandedNodesMap[transcludedScope.$id] === undefined;
$scope.toggleNode = function(transcludedScope, expanding) {
$scope.expandedNodesMap[transcludedScope.$id] = (expanding ? transcludedScope.node : undefined);
if (expanding) {
$scope.expandedNodes.push(transcludedScope.node);
Expand All @@ -168,12 +182,43 @@ if (typeof module !== "undefined" && typeof exports !== "undefined" && module.ex
$scope.expandedNodes.splice(index, 1);
}
if ($scope.onNodeToggle) {
var parentNode = (transcludedScope.$parent.node === transcludedScope.synteticRoot)?null:transcludedScope.$parent.node;
var parentNode = $scope.getParentNode(transcludedScope);
$scope.onNodeToggle({node: transcludedScope.node, $parentNode: parentNode,
$index: transcludedScope.$index, $first: transcludedScope.$first, $middle: transcludedScope.$middle,
$last: transcludedScope.$last, $odd: transcludedScope.$odd, $even: transcludedScope.$even, expanded: expanding});

}
}

$scope.selectNodeHead = function() {
var transcludedScope = this;
var expanding = $scope.expandedNodesMap[transcludedScope.$id] === undefined;

if (expanding && $scope.onNodeRequestData && isNeedExpandRequestData(transcludedScope.node)) {
var nodeBuffer = [],
parentNode = $scope.getParentNode(transcludedScope),
promise = $scope.onNodeRequestData({node: nodeBuffer, $parentNode: parentNode,
$index: transcludedScope.$index, $first: transcludedScope.$first, $middle: transcludedScope.$middle,
$last: transcludedScope.$last, $odd: transcludedScope.$odd, $even: transcludedScope.$even, expanded: expanding});
if (promise) {
if ((angular.isObject(promise) || angular.isFunction(promise)) && angular.isFunction(promise.then)){
promise.then(function() {
if (angular.isArray(nodeBuffer) && nodeBuffer.length > 0) {
transcludedScope.node[$scope.options.nodeChildren] = angular.copy(nodeBuffer);
} else {
transcludedScope.node[$scope.options.nodeChildren] = [];
}
$scope.toggleNode(transcludedScope, expanding);
});
} else {
throw("the return of on-node-request-data must be a promise");
}
} else {
throw("on-node-request-data must be defined in serverSide mode");
}
} else {
$scope.toggleNode(transcludedScope, expanding);
}
};

$scope.selectNodeLabel = function( selectedNode){
Expand Down Expand Up @@ -285,6 +330,7 @@ if (typeof module !== "undefined" && typeof exports !== "undefined" && module.ex
return function ( scope, element, attrs, treemodelCntr ) {

scope.$watch("treeModel", function updateNodeOnRootScope(newValue) {

if (angular.isArray(newValue)) {
if (angular.isDefined(scope.node) && angular.equals(scope.node[scope.options.nodeChildren], newValue))
return;
Expand Down Expand Up @@ -351,6 +397,9 @@ if (typeof module !== "undefined" && typeof exports !== "undefined" && module.ex
return {
restrict: 'A',
link: function($scope, $element, $attrs) {
if ($scope.options.serverSide && typeof $scope.node[$scope.options.nodeChildren] == "undefined") {
$scope.node[$scope.options.nodeChildren] = [{placeHolderSymbol: place_holder_symbol}];
}
$element.data('node', $scope.node);
$element.data('scope-id', $scope.$id);
}
Expand Down