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Merge pull request #2633 from nasa/pane-persistence

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[Navigation Tree] save current state of navigation tree
This commit is contained in:
David Tsay 2020-02-06 16:23:19 -08:00 committed by GitHub
commit 0a9d23d86f
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 50 additions and 6 deletions
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56
src/ui/layout/tree-item.vue
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@ -2,7 +2,7 @@
<li class="c-tree__item-h">
<div
class="c-tree__item"
:class="{ 'is-alias': isAlias, 'is-navigated-object': isNavigated }"
:class="{ 'is-alias': isAlias, 'is-navigated-object': navigated }"
>
<view-control
v-model="expanded"
@ -40,6 +40,8 @@
import viewControl from '../components/viewControl.vue';
import ObjectLabel from '../components/ObjectLabel.vue';
const LOCAL_STORAGE_KEY__TREE_EXPANDED = 'mct-tree-expanded';
export default {
name: 'TreeItem',
inject: ['openmct'],
@ -54,12 +56,12 @@ export default {
}
},
data() {
this.navigateToPath = this.buildPathString(this.node.navigateToParent)
this.navigateToPath = this.buildPathString(this.node.navigateToParent);
return {
hasChildren: false,
isLoading: false,
loaded: false,
isNavigated: this.navigateToPath === this.openmct.router.currentLocation.path,
navigated: this.navigateToPath === this.openmct.router.currentLocation.path,
children: [],
expanded: false
}
@ -75,7 +77,7 @@ export default {
}
},
watch: {
expanded(isExpanded) {
expanded() {
if (!this.hasChildren) {
return;
}
@ -86,6 +88,7 @@ export default {
this.composition.load().then(this.finishLoading);
this.isLoading = true;
}
this.setLocalStorageExpanded(this.navigateToPath);
}
},
mounted() {
@ -107,6 +110,17 @@ export default {
}
this.openmct.router.on('change:path', this.highlightIfNavigated);
this.getLocalStorageExpanded();
},
beforeDestroy() {
/****
* calling this.setLocalStorageExpanded explicitly here because for whatever reason,
* the watcher on this.expanded is not triggering this.setLocalStorageExpanded(),
* even though Vue documentation states, "At this stage the instance is still fully functional."
*****/
this.expanded = false;
this.setLocalStorageExpanded();
},
destroyed() {
this.openmct.router.off('change:path', this.highlightIfNavigated);
@ -139,10 +153,40 @@ export default {
},
highlightIfNavigated(newPath, oldPath) {
if (newPath === this.navigateToPath) {
this.isNavigated = true;
this.navigated = true;
} else if (oldPath === this.navigateToPath) {
this.isNavigated = false;
this.navigated = false;
}
},
getLocalStorageExpanded() {
let expandedPaths = localStorage.getItem(LOCAL_STORAGE_KEY__TREE_EXPANDED);
if (expandedPaths) {
expandedPaths = JSON.parse(expandedPaths);
this.expanded = expandedPaths.includes(this.navigateToPath);
}
},
// expanded nodes/paths are stored in local storage as an array
setLocalStorageExpanded() {
let expandedPaths = localStorage.getItem(LOCAL_STORAGE_KEY__TREE_EXPANDED);
expandedPaths = expandedPaths ? JSON.parse(expandedPaths) : [];
if (this.expanded) {
if (!expandedPaths.includes(this.navigateToPath)) {
expandedPaths.push(this.navigateToPath);
}
} else {
// remove this node path and all children paths from stored expanded paths
expandedPaths = expandedPaths.filter(path => !path.startsWith(this.navigateToPath));
}
localStorage.setItem(LOCAL_STORAGE_KEY__TREE_EXPANDED, JSON.stringify(expandedPaths));
},
removeLocalStorageExpanded() {
let expandedPaths = localStorage.getItem(LOCAL_STORAGE_KEY__TREE_EXPANDED);
expandedPaths = expandedPaths ? JSON.parse(expandedPaths) : [];
expandedPaths = expandedPaths.filter(path => !path.startsWith(this.navigateToPath));
localStorage.setItem(LOCAL_STORAGE_KEY__TREE_EXPANDED, JSON.stringify(expandedPaths));
}
}
}