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Allow the toolbox to scroll (#1319)

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* Allow the toolbox to scroll

* Switch from onMouseDown to onClick_ for toolbox category taps and clicks.
This commit is contained in:
Rachel Fenichel
2017-09-18 12:44:48 -07:00
committed by GitHub
parent e669466475
commit da6d392878
2 changed files with 24 additions and 9 deletions
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12
core/blockly.js
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@@ -402,11 +402,15 @@ Blockly.defineBlocksWithJsonArray = function(jsonArray) {
* @param {boolean} opt_noCaptureIdentifier True if triggering on this event
* should not block execution of other event handlers on this touch or other
* simultaneous touches.
* @param {boolean} opt_noPreventDefault True if triggering on this event
* should prevent the default handler. False by default. If
* opt_noPreventDefault is provided, opt_noCaptureIdentifier must also be
* provided.
* @return {!Array.<!Array>} Opaque data that can be passed to unbindEvent_.
* @private
*/
Blockly.bindEventWithChecks_ = function(node, name, thisObject, func,
opt_noCaptureIdentifier) {
opt_noCaptureIdentifier, opt_noPreventDefault) {
var handled = false;
var wrapFunc = function(e) {
var captureIdentifier = !opt_noCaptureIdentifier;
@@ -434,8 +438,10 @@ Blockly.bindEventWithChecks_ = function(node, name, thisObject, func,
if (name in Blockly.Touch.TOUCH_MAP) {
var touchWrapFunc = function(e) {
wrapFunc(e);
// Stop the browser from scrolling/zooming the page.
if (handled) {
// Calling preventDefault stops the browser from scrolling/zooming the
// page.
var preventDef = !opt_noPreventDefault;
if (handled && preventDef) {
e.preventDefault();
}
};