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8be96a9e8d
We're not actively developing these at the moment. I could also just delete them, not sure if we're ready for that yet. TBR=abarth@chromium.org Review URL: https://codereview.chromium.org/999873002
63 lines
1.7 KiB
Plaintext
63 lines
1.7 KiB
Plaintext
<!--
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// Copyright 2015 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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-->
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<import src="sky-element.sky" />
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<import src="sky-ink-splash.sky" />
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<script>
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import "dart:sky";
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HTMLStyleElement _kStyleElement;
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class MaterialElement extends SkyElement {
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Set<SkyInkSplash> _activeSplashes = new Set();
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bool _didAddTransformHack = false;
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MaterialElement() {
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addEventListener('pointerdown', _handlePointerDown);
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addEventListener('gesturescrollstart', _handleScrollStart);
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}
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void addTransformHack() {
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if (_didAddTransformHack)
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return;
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if (style['transform'] != null)
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return;
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_didAddTransformHack = true;
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// We set the transform here to become a container for absolutely positioned
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// elements. We should either have a better way of becoming such a container
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// or we should make every RenderBlock be such a container.
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style['transform'] = 'translateX(0)';
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}
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void removeTransformHack() {
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if (!_didAddTransformHack)
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return;
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style.removeProperty('transform');
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_didAddTransformHack = false;
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}
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void _handlePointerDown(PointerEvent event) {
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addTransformHack();
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ClientRect rect = getBoundingClientRect();
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SkyInkSplash splash = new SkyInkSplash();
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shadowRoot.prependChild(splash);
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splash.start(event.x, event.y, rect).then(_handleSplashComplete);
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_activeSplashes.add(splash);
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}
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void _handleSplashComplete(SkyInkSplash splash) {
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_activeSplashes.remove(splash);
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if (_activeSplashes.isEmpty)
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removeTransformHack();
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}
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void _handleScrollStart(GestureEvent event) {
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for (SkyInkSplash splash in _activeSplashes) {
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splash.cancel();
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}
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}
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}
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</script>
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