Jupyter notebook bokeh canvas archive via javascript hacking

archive_the_bk_canvas.py

from IPython.core.display import display, HTML, Javascript

def Archive_the_bk_canvas():
    archiving_the_bkcanvas= "\
    console.log(this); \
    var loop = setInterval(execute.bind(this, null), 1000); \
    function execute(output_area){ \
        console.log(this); \
        if(this.element.find(\".bk-canvas\").length == 0){\
            console.log(\"loop\"); \
        }else{ \
            var i; \
            this.outputs.length = 0; \
            for (i = 0; i < this.element.find(\".bk-canvas\").length; i++) {\
                var dataURL = this.element.find(\".bk-canvas\")[i].toDataURL(\"image/png\"); \
                var output_object = {\"output_type\":\"display_data\",\"transient\":{},\"data\":{\"text/html\":\"<img src=\'\"+dataURL+\"\'/>\",\"text/plain\":\"<IPython.core.display.HTML object>\"},\"metadata\":{}} ; \
                this.outputs.push(output_object); \
            } \
            clearInterval(loop); \
        };\
    };"
    display(Javascript(archiving_the_bkcanvas))
    #display("<script>"+HTML(archiving_the_bkcanvas+"</script>"))
    
    
    
    
    

Old version

def archive_the_bk_canvas():
    from IPython.core.display import display, HTML
    import time
    time.sleep(1)

    archiving_the_bkcanvas= "<script> \
    var bk = document.getElementsByClassName('bk-canvas'); \
    console.log(bk.length); \
    var prev_cell = Jupyter.notebook.get_cell(Jupyter.notebook.get_selected_index()); \
    var i;\
    for (i = 0; i < bk.length; i++) {\
        var dataURL = bk[i].toDataURL('image/png');\
        prev_cell.output_area.outputs[i].data['text/html'] = \"<img src=\'\"+dataURL+\"\'/>\";\
    }</script>"
    display(HTML(archiving_the_bkcanvas))