38 lines
1.1 KiB
JavaScript
38 lines
1.1 KiB
JavaScript
/**
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* Present a CMap through the bundled drawing engine.
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*
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* CmapView owns the canvas and concrete cmap.js instance. It creates and
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* destroys drawing objects but contains no concept, placement or persistence
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* rules; CmapEditor remains responsible for interpreting user interaction.
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*/
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export class CmapView {
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constructor(canvas, CmapFactory, onSelection, onActivation) {
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if (!(canvas instanceof Object)) throw new TypeError("A CMap canvas is required");
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if (typeof CmapFactory !== "function") throw new TypeError("A CMap factory is required");
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this.canvas = canvas;
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this.map = CmapFactory(canvas);
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this.map.onSelection(onSelection);
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this.map.onActivation(onActivation);
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}
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createNode(attributes) {
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return this.map.node(attributes);
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}
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createConnector(attributes) {
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return this.map.link(attributes);
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}
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setZoom(factor) {
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this.map.zoom(factor);
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}
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surfaceElement() {
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return this.canvas.querySelector(":scope > .rw-cmap-surface");
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}
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destroy() {
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if (typeof this.map.destroy === "function") this.map.destroy();
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}
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}
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