fix: Correct event listener cleanup in destroy method #18
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Addresses issue #9. This commit refactors the event listener management in VisualImageTool to prevent potential memory leaks and ensure proper cleanup when the tool instance is destroyed. Changes include: - Pre-binding event handlers in the constructor to maintain consistent function references. - Updating `_setupEventListeners`, `_createFocusMarker`, and `_createCropOverlay` (including crop handles) to use these pre-bound handlers for adding event listeners. - Modifying the `_handleCropHandleMouseDown` method to derive the handle type from `event.currentTarget.dataset.handle`. - Storing crop handle elements in `this.cropHandles` for easier iteration. - Comprehensively updating the `destroy` method to use the pre-bound handlers for removing all attached event listeners from window, document, image element, focus marker, crop overlay, and crop handles. - Nullifying bound handler references and clearing the `cropHandles` array in `destroy` for thorough cleanup.
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Addresses issue #9.
This commit refactors the event listener management in VisualImageTool to prevent potential memory leaks and ensure proper cleanup when the tool instance is destroyed.
Changes include:
_setupEventListeners,_createFocusMarker, and_createCropOverlay(including crop handles) to use these pre-bound handlers for adding event listeners._handleCropHandleMouseDownmethod to derive the handle type fromevent.currentTarget.dataset.handle.this.cropHandlesfor easier iteration.destroymethod to use the pre-bound handlers for removing all attached event listeners from window, document, image element, focus marker, crop overlay, and crop handles.cropHandlesarray indestroyfor thorough cleanup.