Queries on Custom perspective plugin

[Madasamy26]

Hi,

I am developing custom plugin for perspective,

In that, plugin configuration, like below

    name: "Grid",
    create: grid_create,
    selectMode: "toggle",
    update: grid_update,
    deselectMode: "pivots",
    styleElement: style_element,
    save: function() {
        const hypergrid = get_hypergrid.call(this);
        if (hypergrid && hypergrid.selectionModel.hasRowSelections()) {
            return {selected: hypergrid.behavior.dataModel.getSelectedRowID()};
        }
    },
    restore: function(config) {
        this._plugin_config = config;
    },
    resize: async function() {
        const hypergrid = get_hypergrid.call(this);
        if (hypergrid) {
            let nrows = await this._view.num_rows();
            hypergrid.behavior.dataModel.setDirty(nrows);
            await hypergrid.canvas.resize(true);
        }
    },
    delete: function() {
        const hypergrid = get_hypergrid.call(this);
        if (hypergrid) {
            hypergrid.terminate();
            hypergrid.div = undefined;
            hypergrid.canvas.div = undefined;
            hypergrid.canvas.canvas = undefined;
            hypergrid.sbVScroller = undefined;
            hypergrid.sbHScroller = undefined;
            delete this[HYPERGRID_INSTANCE];
        }
    }
};  

So If we are sorting on perspective ..perspective will call the create method of plugin, create will re-instantiate the perspective plugin

Is there any method for invoking while changing options like filtering,sorting from perspective instead of create ?

[texodus]

create() is called when any UI parameters are changed, as Perspective's View objects are immutable, and the existing plugins are lazily instantiated. There is no "plugin state" initialization method so far - but in the pasted example above, the if (hypergrid) { part is effectively that, as it is only invoked when the plugin is instantiated.

You may find these tutorials helpful:

https://blog.scottlogic.com/2019/04/23/perspective-plugin-api-how-to-build-a-new-plugin.html https://blog.scottlogic.com/2019/04/18/building-a-perspective-plugin-with-d3fc.html

[Madasamy26]

thanks @timkpaine