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[Fixed Position] Remove old elements

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Remove elements from view configuration after they have been
removed from composition, WTD-883.
This commit is contained in:
Victor Woeltjen 2015-02-24 14:32:39 -08:00
parent 6d709a6851
commit 07fc65ed5b
1 changed files with 32 additions and 1 deletions
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33
platform/features/layout/src/FixedController.js
View File

@ -225,7 +225,8 @@ define(
// Ensure that all telemetry elements have elements in view
function ensureElements(ids) {
var found = {};
var contained = {},
found = {};
// Track that a telemetry element is in the view
function track(element) {
@ -251,8 +252,38 @@ define(
(ids || []).filter(notFound).forEach(add);
}
// Remove telemetry elements which don't match set of contained ids
function removeOtherElements(ids) {
// Set of ids, to simplify lookup
var contained = {},
elements = ($scope.configuration || {}).elements;
// Track that an id is present; used to build set
function track(id) {
contained[id] = true;
}
// Check if an element is still valid
function valid(element) {
return (element.type !== "fixed.telemetry") ||
contained[element.id];
}
// Only need to remove elements if any have been defined
if (Array.isArray(elements)) {
// Build set of contained ids
ids.forEach(track);
// Filter out removed telemetry elements
$scope.configuration.elements = elements.filter(valid);
// Refresh elements exposed to template
refreshElements();
}
}
// Handle changes in the object's composition
function updateComposition(ids) {
// Remove any obsolete telemetry elements
removeOtherElements(ids);
// Populate panel positions
ensureElements(ids);
// Resubscribe - objects in view have changed