Keep expanded/collapsed state of nodes when reloading a tree store

[fabiojpoli]

Forum post

Allow refresh gantt data (project.load()) but keep all other components state (tasks expanded, zoom, etc).

Even using syncDataOnLoad : false the state like collapsed task is expanding again on demo bellow:

const project = new ProjectModel({
    transport : {
        load : {
            url : '../_datasets/launch-saas.json'
        }
    },
    taskStore : {
        syncDataOnLoad : false
    }
});

new Gantt({
    appendTo : 'container',

    project,

    columns : [
        { type : 'name', width : 250 }
    ],

    // Custom task content, display task name on child tasks
    taskRenderer({ taskRecord }) {
        if (taskRecord.isLeaf && !taskRecord.isMilestone) {
            return taskRecord.name;
        }
    }
});

project.load();

setInterval(function() {
    project.load();
}, 3000);

[isglass]

syncDataOnLoad: false is the default, replacing the complete dataset. syncDataOnLoad: true would only update what has changed. Try that

[fabiojpoli]

@isglass , changing on above example to true:

const project = new ProjectModel({
    transport : {
        load : {
            url : '../_datasets/launch-saas.json'
        }
    },
    taskStore : {
        syncDataOnLoad : true
    }
});

It returns an error:

Entity.js:70 Uncaught (in promise) Error: Already entered replica
at TaskModelEx.enterGraph (Entity.js:70)
at EngineReplica.addEntity (Replica.js:17)
at TaskModelEx.joinProject (ChronoPartOfProjectModelMixin.js:15)
at TaskModelEx.fn (SchedulerBasicProjectMixin.js:341)
at TaskModelEx.traverse (TreeNode.js:424)
at ProjectModel.traverse (TreeNode.js:430)
at ProjectModel.joinStoreRecords (SchedulerBasicProjectMixin.js:344)
at ProjectModel.repopulateReplica [as repopulateReplicaNow] (SchedulerBasicProjectMixin.js:264)
at ProjectModel. (Delayable.js:746)
at Function.invoker (Delayable.js:60)