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e04b9828ea
Use ng-model when communicating state to/from the tree in browse mode. This will simplify implementation of the Locator control, which also uses a tree, but which should not set navigation state. WTD-593.
72 lines
2.7 KiB
JavaScript
72 lines
2.7 KiB
JavaScript
/*global define,Promise*/
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/**
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* Module defining BrowseController. Created by vwoeltje on 11/7/14.
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*/
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define(
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[],
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function () {
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"use strict";
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var ROOT_OBJECT = "ROOT";
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/**
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* The BrowseController is used to populate the initial scope in Browse
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* mode. It loads the root object from the objectService and makes it
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* available in the scope for Angular template's; this is the point at
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* which Angular templates first have access to the domain object
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* hierarchy.
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*
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* @constructor
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*/
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function BrowseController($scope, objectService, navigationService) {
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// Callback for updating the in-scope reference to the object
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// that is currently navigated-to.
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function setNavigation(domainObject) {
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$scope.navigatedObject = domainObject;
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$scope.treeModel.selectedObject = domainObject;
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}
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// Load the root object, put it in the scope.
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// Also, load its immediate children, and (possibly)
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// navigate to one of them, so that navigation state has
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// a useful initial value.
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objectService.getObjects([ROOT_OBJECT]).then(function (objects) {
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var composition = objects[ROOT_OBJECT].useCapability("composition");
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$scope.domainObject = objects[ROOT_OBJECT];
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if (composition) {
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composition.then(function (c) {
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// Check if an object has been navigated-to already...
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if (!navigationService.getNavigation()) {
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// If not, pick a default as the last
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// root-level component (usually "mine")
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navigationService.setNavigation(c[c.length - 1]);
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} else {
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// Otherwise, just expose it in the scope
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$scope.navigatedObject = navigationService.getNavigation();
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}
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});
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}
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});
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// Provide a model for the tree to modify
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$scope.treeModel = {
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selectedObject: navigationService.getNavigation()
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};
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// Listen for changes in navigation state.
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navigationService.addListener(setNavigation);
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// Also listen for changes which come from the tree
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$scope.$watch("treeModel.selectedObject", setNavigation);
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// Clean up when the scope is destroyed
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$scope.$on("$destroy", function () {
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navigationService.removeListener(setNavigation);
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});
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}
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return BrowseController;
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}
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); |