_recognizerHandler(e) {
const changedTouches = e.changedTouches || e.originalEvent.changedTouches;
this.actives.update(e, changedTouches);
if (this.getDocumentActives().length() > 2) {
this.clear();
return;
}
if (e.type === TOUCH_START) {
if (this.actives.length() <= 2) {
this.currentATouch = this.actives.first() || null;
if (this.actives.length() > 1) {
this.currentBTouch = this.actives.nth(1) || null;
}
} else {
this.clear();
}
if (this.currentATouch !== null && this.currentBTouch === null) {
this.started = (e.timeStamp || e.originalEvent.timeStamp);
} else if (this.currentATouch !== null && this.currentBTouch !== null) {
this.maybeStart(e);
}
} else if (e.type === TOUCH_END || e.type === TOUCH_CANCEL) {
if (this.currentATouch === null || this.currentBTouch === null) {
this.clear();
return;
}
if (this.actives.length() <= 1 && !this.checkDelta(changedTouches)) {
return;
} else if (this.actives.length() > 1 || this.getDocumentActives().length() > 1) {
this.clear();
return;
}
if (this.actives.length() !== 0) {
return;
}
const elapsed = (e.timeStamp || e.originalEvent.timeStamp) - this.started;
if (elapsed > 20 && elapsed < TAP_TIME) {
this.handler.call(e.currentTarget, this.currentATouch, this.currentBTouch);
}
this.clear();
} else if (e.type === TOUCH_MOVE) {
if (this.getDocumentActives().length() > 2) {
this.clear();
}
}
}
_recognizerHandler(e) {
const changedTouches = e.changedTouches || e.originalEvent.changedTouches;
this.actives.update(e, changedTouches);
if (this.getDocumentActives().length() > 1) {
this.clear();
return;
}
if (e.type === TOUCH_START) {
this.currentTouch = this.actives.first();
} else if (e.type === TOUCH_END || e.type === TOUCH_CANCEL) {
if (this.actives.length() > 0) {
this.clear();
} else {
this.end(e, this.currentTouch);
}
} else if (e.type === TOUCH_MOVE) {
if (!this.actives.contains(this.currentTouch) ||
this.actives.length() > 1 ||
this.getDocumentActives().length() > 1) {
this.clear();
return;
}
const touch = changedTouches[0];
const yDelta = Math.abs(touch.clientY - this.currentTouch.clientY);
const xDelta = Math.abs(touch.clientX - this.currentTouch.clientX);
if (this.committed === UNCOMMITTED) {
if (yDelta > 10 && yDelta > xDelta) {
this.committed = VERTICAL;
} else if (xDelta > 10 && xDelta > yDelta) {
this.committed = HORIZONTAL;
}
if (this.committed === this.dimension) {
this.currentTouch = touch;
this.startHandler.call(e.currentTarget, new GestureObject(e, touch));
}
} else if (this.committed === this.dimension) {
this.currentTouch = touch;
const g = new GestureObject(e, touch);
this.moveHandler.call(e.currentTarget, g);
}
}
}
_recognizerHandler(e) {
const {changedTouches} = e;
const now = e.timeStamp;
this.actives.update(e, changedTouches);
if (this.getDocumentActives().length() > 2) {
this.clear();
return;
}
if (e.type === TOUCH_START) {
if (this.actives.length() === 1) {
this.currentATouch = this.actives.first();
this.startAX = this.currentATouch.clientX;
this.lastAX = this.startAX;
this.lastAY = this.currentATouch.clientY;
this.startTime = now;
} else if (this.actives.length() === 2 && this.currentATouch !== null) {
this.startTime = now;
this.currentBTouch = this.actives.nth(1);
this.startBX = this.currentBTouch.clientX;
this.lastBX = this.startBX;
this.lastBY = this.currentBTouch.clientY;
if (this.lastAX !== -1 &&
(Math.abs(this.lastAX - this.lastBX) > 150 &&
Math.abs(this.lastAY - this.lastBY) > 150)) {
this.clear();
}
} else {
this.clear();
}
} else if (e.type === TOUCH_END || e.type === TOUCH_CANCEL) {
if (this.currentATouch === null || this.currentBTouch === null) return;
for (let i = 0; i < changedTouches.length; ++i) {
const touch = changedTouches[i];
if (touch.identifier === this.currentATouch.identifier) {
this.lastAX = touch.clientX;
} else if (touch.identifier === this.currentBTouch.identifier) {
this.lastBX = touch.clientX;
}
}
if (this.actives.length() === 0) {
this.checkCompletion(now - this.startTime);
}
} else if (e.type === TOUCH_MOVE) {
if (this.getDocumentActives().length() > 2) {
this.clear();
return;
}
if (this.currentATouch !== null || this.currentBTouch !== null) {
for (let i = 0; i < changedTouches.length; ++i) {
const touch = changedTouches[i];
if (this.currentATouch !== null && touch.identifier === this.currentATouch.identifier) {
this.lastAX = touch.clientX;
this.lastAY = touch.clientY;
} else if (this.currentBTouch !== null && touch.identifier === this.currentBTouch.identifier) {
this.lastBX = touch.clientX;
this.lastBY = touch.clientY;
}
}
if (this.lastAX !== -1 && this.lastBX !== -1 &&
(Math.abs(this.lastAX - this.lastBX) > 150 &&
Math.abs(this.lastAY - this.lastBY) > 150)) {
this.clear();
}
}
}
}