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clean up bound event handlers in webgldrawer.destroy

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Tom 2024-02-12 18:05:33 -05:00
parent 6e4914ada3
commit 02898cfc17
1 changed files with 8 additions and 2 deletions
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10
src/webgldrawer.js
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@ -93,8 +93,10 @@
this._backupCanvasDrawer = null;
// Add listeners for events that require modifying the scene or camera
this.viewer.addHandler("tile-ready", ev => this._tileReadyHandler(ev));
this.viewer.addHandler("image-unloaded", ev => this._imageUnloadedHandler(ev));
this._boundToTileReady = ev => this._tileReadyHandler(ev);
this._boundToImageUnloaded = ev => this._imageUnloadedHandler(ev);
this.viewer.addHandler("tile-ready", this._boundToTileReady);
this.viewer.addHandler("image-unloaded", this._boundToImageUnloaded);
// Reject listening for the tile-drawing and tile-drawn events, which this drawer does not fire
this.viewer.rejectEventHandler("tile-drawn", "The WebGLDrawer does not raise the tile-drawn event");
@ -155,6 +157,10 @@
ext.loseContext();
}
// unbind our event listeners from the viewer
this.viewer.removeHandler("tile-ready", this._boundToTileReady);
this.viewer.removeHandler("image-unloaded", this._boundToImageUnloaded);
// set our webgl context reference to null to enable garbage collection
this._gl = null;