I see there are some really good keyboard shortcuts for scrolling and zooming. Is there a way that I can accomplish the same Zoom In/ Zoom Out functionality that comes with Ctrl+ and Ctrl-, by using the mouseWheel? I’d like to just click on the canvas div element and then use the mouse wheel to zoo…

If you middle-mouse-click, it changes the behavior of mouse-wheel events to zoom instead of scroll. Programmatically you can specify the behavior by setting Diagram.toolManager.mouseWheelBehavior, ToolManager | GoJS API

Ok that’s nice. I’d like to just have the mouseWheel zoom by default, where exactly do I need to have this line of code, this code by itself isn’t working: myDiagram2.toolManager.WheelZoom I’m declaring the name my diagram as myDiagram2: var myDiagram2 = graph(go.Diagram, "myDiagramDiv2", { …

If you search the samples you’ll find some examples of how to set that property.

Alright I was able to figure that out. One other feature I came across, I saw one of the samples had an example of a search functionality that is nice to have. It works no problem when I set: myDiagram2.highlightCollection(results); I would prefer to select all matching strings from the …

Yes, that looks right. Are you sure that in that case the value of results really does have more than one Node in it? In other words, is results.count > 1? Note that you are checking the value of key in the data. I suppose you are trying to search for subsets of nodes that have a particular patt…

Yeah it looks like the count is right, when I’m getting a console.log of 6 when I type in “c” which is correct but it only highlights the first node: [image] I know that calls “ChangedSelection” which I am listening for in my diagram and calling this function but that shouldn’t be changing anythi…

I suggest that you debug the code by putting in console.log calls to indicate when and how each node or link is changing state. Maybe you are having more side-effects than you expect.

Alright yeah I’m getting the same result whether I remove the “Changed Selection” listener or not. I have this binding in the nodeTemplate go.Shape but this shouldn’t be affecting the selected nodes, this would be the only other thing in the code that would affect it: new go.Binding("fill", "i…

It seems to me more likely that the search that you executed really did find only one node whose data.key matched the given expression.

Alright yeah I would assume if I type in “c” into the input and get a console.log of 6 for results based on my code above and the following nodes have a “c” in them, that is returning the correct number of nodes: CHESTFIELD SOLUTIONS CHILD 1 CHILD 2 CHILD 3 CHILD 4 CHILD 5 I get all 6 nodes h…

OK, if you did find multiple nodes, perhaps there is either an error in the “ChangedSelection” handler or perhaps it is also deselecting parts.

Northwoods Software

Incorporating Zoom In/Zoom Out with the Mouse Wheel

GoJS

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