open_empty does not clear canvas? - how to clear mindmap for a new start?

[Klaus Buecher]

steps to reproduce:
call open_empty()
create a few nodes

call open_empty() again

I would expect to see again the default node = root. But I also see the nodes that were created in step 1. By debugging, I see that the a lot is reset, the new node list is ok, so maybe the canvas is not cleared?

Thanks for your help and the good library.

[Zhigang Zhang]

open_empty() is not a documented api of jsMind.

if you want open a empty mindmap multiple times, please follow the code below:

// create a jsMind instance
var jm = new jsMind(options);

// open an empty map
jm.show()

// open an empty map again
jm.show()

please note that, we can show multiple times, but new jsMind once.

doc about that: https://github.com/hizzgdev/jsmind/blob/master/docs/en/1.usage.md

[Klaus Buecher]

many thanks.
Unfortunately, it gives this (first your log, then error message):
view.reset jsmind.js:2406:20
Uncaught (in promise) TypeError: this.graph_canvas is undefined

in jsmind.js:2411:13

What to do?

[Klaus Buecher]

as options, I took those from the example, which may be wrong:
var options = {
container: 'jsmind_container',
theme: 'opto',
editable: true,
view: {
draggable: true,
}
};

[Klaus Buecher]

if I follow usage 1, then jm.show() throws an error because this.graph_canvas does not exist.
That also happens if I include canvas explicitly in the options.

If I change view.reset() to

        if (this.graph_canvas) this.graph_canvas.clear();

all is fine

[Zhigang Zhang]

Thanks for reporting the issue, I will check it later.

[Zhigang Zhang]

Hi @opto , would you please share more context about the issue? I can not reproduce the bug on my laptop. Entire html would be better.

[Klaus Buecher]

I will make a pull request for a function to Set text color. I think that does not exist yet. In that context my question will be more clear..

[Zhigang Zhang]

There is a method to set text color: jm.set_node_color(node_id, bg_color, fg_color) , so you don't have to. @opto

fg_color is the text color

[Klaus Buecher]

I know, I have added text/font color

[Klaus Buecher]

Just sah the Part concerning FG color, I will try that