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fix(drag-drop): avoid interfering with element clicks #13152

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merged 1 commit into from
Oct 2, 2018

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crisbeto
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Resolves a long-standing TODO about starting the drag&drop sequence after the user has dragged over a certain amount of pixels, rather than starting it immediately on mousedown/touchstart. This prevents random clicks and taps on the element from being interpreted as dragging and avoids potentially interrupting the native click events on children of CdkDrag.

@crisbeto crisbeto added the target: major This PR is targeted for the next major release label Sep 16, 2018
@googlebot googlebot added the cla: yes PR author has agreed to Google's Contributor License Agreement label Sep 16, 2018
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LGTM

* Minimum amount of pixels that the user should
* drag, before the CDK initiates a drag sequence.
*/
minimumDragDistance: number;
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What do you think of dragStartThreshold?

* @param referenceElement Element that started the drag sequence.
* @param event Browser event object that started the sequence.
*/
private _prepareDragSequence(referenceElement: HTMLElement, event: MouseEvent | TouchEvent) {
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How about _resetDragSequence or _initializeDragSequence?

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I went with _initializeDragSequence. _resetDragSequence sounds like something you'd call once the sequence is done.

Resolves a long-standing TODO about starting the drag&drop sequence after the user has dragged over a certain amount of pixels, rather than starting it immediately on `mousedown`/`touchstart`. This prevents random clicks and taps on the element from being interpreted as dragging and avoids potentially interrupting the native click events on children of `CdkDrag`.
@crisbeto crisbeto added the action: merge The PR is ready for merge by the caretaker label Sep 18, 2018
@vivian-hu-zz vivian-hu-zz merged commit 38e7dd2 into angular:master Oct 2, 2018
roboshoes pushed a commit to roboshoes/material2 that referenced this pull request Oct 23, 2018
Resolves a long-standing TODO about starting the drag&drop sequence after the user has dragged over a certain amount of pixels, rather than starting it immediately on `mousedown`/`touchstart`. This prevents random clicks and taps on the element from being interpreted as dragging and avoids potentially interrupting the native click events on children of `CdkDrag`.
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4 participants