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JointJS Element with ports and tool items (delete, settings etc.)

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野的像风
野的像风 2021-01-06 23:32

I managed to enhance my SVG-shape with ports via:

joint.shapes.devs.Element = joint.shapes.basic.Generic.extend(_.extend({},     
joint.shapes.basic.PortsMod
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  • 天命终不由人
    天命终不由人 (楼主)
    2021-01-07 00:00

    Solution

    The key was this plugin. The author extended the PortsModelInterface with own code for a move-, resize- and ports-tool. I extended it further by implementing the delete functionality. This way the devs-model is open to any extension in case of functionality.

    How it´s done

    In tooledViewPlugin.js there is joint.plugins.TooledModelInterface = {}. In there I added: 

    deleteToolMarkup: 'Remove this element from the model',

    Below in joint.plugins.TooledViewInterface = {} I wrote

    renderDeleteTool: function () {
    var deleteContainer = this.$('.deleteTool').empty();
    var markup = V(this.model.deleteToolMarkup);
    for(var id in markup)
        deleteContainer.append(markup[id].node);
}

    An example shape with special SVG markup other than a simple rectangle. Note the in the markup:

    joint.shapes.devs.UnspecifiedProcess = joint.shapes.devs.Model.extend(_.extend({}, joint.plugins.TooledModelInterface, {

markup: ['',
            '',
                '',
                '',
                    '',
                      '',
                        '',
                          '',
                        '',
                      '',
                    '',
                '',
            '',
            '',
            '',
            '',
            '',
            '',
            '',
            '',
        '</g>'].join(''),

defaults: joint.util.deepSupplement({
    type: 'devs.UnspecifiedProcess',
    inPorts: [''],
    outPorts: [''],
    moveTool: true,
    resizeTool: true,
    size: { width: 100, height: 31},
    attrs: {
        '.inPorts circle': { fill: '#fff' },
        '.outPorts circle': { fill: '#fff' },
        '.body': {
            width: 67, height: 21,
            stroke: 'none'
        },
    }
}, joint.shapes.devs.Model.prototype.defaults),
}));
joint.shapes.devs.UnspecifiedProcessView = joint.shapes.devs.ModelView.extend(joint.plugins.TooledViewInterface);
</code></pre>

<p>The final part is instantiating the element with <code>new joint.shapes.devs.UnspecifiedProcess</code>. I present it to you with my drag and drop logic as it might be useful for you too:</p>

<pre><code>//Drag and drop shapes
if (Modernizr.draganddrop) {
    // Mouse position
    var posX = 0,
        posY = 0;
    // Selected Element with start of dragging
    var selectedEl = "";
    var selectedObj = null;
    var oldObj = null;
    //
    $(".draggable-svg").on("dragstart", function(e) {
        selectedEl = this.id;
        console.log(selectedEl);
    }); 
    $("#drawing-area").on("dragover", function(e) {
        e.preventDefault();
        posX = e.originalEvent.pageX - sideBarW;
        posY = e.originalEvent.pageY - topBarH;
    }); 
    $("#drawing-area").on("drop", function(e) {
        e.preventDefault();
        var element = new joint.shapes.devs[selectedEl]({
            position: { x: posX, y: posY }
        });
        graph.addCell(element);
        selectedEl = "";
        oldObj = selectedObj;
        selectedObj = element;

    }); 
} else {
    alert("Your browser is very old. Please update.");
}
</code></pre>
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