Detect when panel has been moved within dashboard.

HI,

Is there a way to detect when an existing panel has been moved on a dashboard?

In other words, I'd like to fire an event when a panel's position has changed.

I know you can use $dragCreate to stop panels from being movable: https://forum.webix.com/discussion/35630/way-to-prevent-dashboard-panels-from-being-moved (which we are using).

And that there is also a $dragDestroy method that seems to get fired off when a panel has dropped.

I'm not sure what to do from here, however.

Thanks.

Comments

  • edited July 12

    Hey @mcmurphy510, we can use native dashboard events like onBeforeDragIn and onAfterDrop to track the position of our dragged panel. Please take a look at this example: https://snippet.webix.com/a8zodwxi. If the poition of the panel was changed you'll get a message, if the position stayed the same nothing happens.

  • Hi @Dzmitry,

    Thanks for the answer, but it does not work for what we are doing.

    We are using this method to conditionally stop the dashboard panels from being moved.:

    webix.protoUI({
        name:"c-dashboard",
        isDragNode:function(target){
            var css = (target.className || "").toString();
            //check for webix header and look up
            if (css.indexOf("panel_drag_icon") != -1)
                return target;
            if (target.parentNode && target != this.$view)
                return this.isDragNode(target.parentNode);
            return false;
        },
        $dragCreate:function(object, e){
            //check for header
            if (!this.isDragNode(e.target)) return false;
            //if ok, call parent logic
            return webix.ui.dashboard.prototype.$dragCreate.apply(this, arguments);
        },
    }, webix.ui.dashboard);

    We then create an empty c-dashboard:

    webix.ui({
        id: "dashboardView",
        view:"c-dashboard",
        gridColumns:48,
        gridRows:48,
        cellHeight: 50, 
        cellWidth: 50,
        autoplace: false
    })

    To populate the c-dashboard with panels, this method gets called from the onChange of a richselect:

    let dashboardInit = function(id)  {
        webix.promise.all([
            webix.ajax().get("/api/dashboard/" + id + "/widgets")
        ]).then(function(result)  {
            let widgets = result[0].json();
            for (const widget of widgets)  {
                buildWidget(widget);
            }
        });
    };

    Finally each panel is built using addView of c-dashboard (defined in protoUi, above):

    let buildWidget = function(widget)  {
        let widgetId = "widget_" + widget.id;
        $$("dashboardView").addView({
            view: "panel",
            id: widgetId,
            css: "outerWidgetPanel",
            x: widget.x,
            y: widget.y,
            dx: widget.dx,
            dy: widget.dy,
            resize: true,
            body: {  template: panelTemplate(widgetId)  },
        });
        (async () =>  {
            const Module = await import("/src/js/widget/" + widget.type);
            let Widget = Module.default;
            let widgetInstance = new Widget(widget);
            widgets.push({  id: widget.id, widgetInstance  });
        })();
    };

    I have tried to use onBeforeDragIn and onAfterDrop in the c-dashboard, as you show in your snippet. I have also tried using:

    $$("dashboardView").attachEvent("onBeforeDragIn", function(id)  {
            let x = id.dashboard.x;
            let y = id.dashboard.y;
            console.log(x,y);
        });
        $$("dashboardView").attachEvent("onAfterDrop", function(id){
            if (id.dashboard.x === x && id.dashboard.y === y) {
                return false;
            }
            console.log("Foo...");
        });

    after the for loop in dashboardInit(). Neither event gets triggered in either case.

    Thanks.

  • Hi @Dzmitry,

    Any update on this?

    Thanks.

  • edited July 25

    Hi again @mcmurphy510, sorry for the late response, but it seems that these events (drag events of the dashboard view) were introduced in Webix version 6.3. So I would like to know if you are using an older version and if it would be possible for you to update it if that's the case. The snippet I provided should work just fine in that case.

    Either way, if the issue still persists, it would be really helpful if you could provide a small sample via a snippet tool.

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