sdk/platform-tools/systrace/catapult/telemetry/telemetry/internal/actions/swipe.py

   1 # Copyright 2013 The Chromium Authors. All rights reserved.
   2 # Use of this source code is governed by a BSD-style license that can be
   3 # found in the LICENSE file.
   4
   5 from telemetry.internal.actions import page_action
   6 from telemetry.internal.actions import utils
   7 from telemetry.util import js_template
   8
   9
  10 class SwipeAction(page_action.PageAction):
  11   def __init__(self, selector=None, text=None, element_function=None,
  12                left_start_ratio=0.5, top_start_ratio=0.5,
  13                direction='left', distance=100, speed_in_pixels_per_second=800,
  14                synthetic_gesture_source=page_action.GESTURE_SOURCE_DEFAULT):
  15     super(SwipeAction, self).__init__()
  16     if direction not in ['down', 'up', 'left', 'right']:
  17       raise page_action.PageActionNotSupported(
  18           'Invalid swipe direction: %s' % self.direction)
  19     self._selector = selector
  20     self._text = text
  21     self._element_function = element_function
  22     self._left_start_ratio = left_start_ratio
  23     self._top_start_ratio = top_start_ratio
  24     self._direction = direction
  25     self._distance = distance
  26     self._speed = speed_in_pixels_per_second
  27     self._synthetic_gesture_source = ('chrome.gpuBenchmarking.%s_INPUT' %
  28                                       synthetic_gesture_source)
  29
  30   def WillRunAction(self, tab):
  31     utils.InjectJavaScript(tab, 'gesture_common.js')
  32     utils.InjectJavaScript(tab, 'swipe.js')
  33
  34     # Fail if browser doesn't support synthetic swipe gestures.
  35     if not tab.EvaluateJavaScript('window.__SwipeAction_SupportedByBrowser()'):
  36       raise page_action.PageActionNotSupported(
  37           'Synthetic swipe not supported for this browser')
  38
  39     if (self._synthetic_gesture_source ==
  40         'chrome.gpuBenchmarking.MOUSE_INPUT'):
  41       raise page_action.PageActionNotSupported(
  42           'Swipe page action does not support mouse input')
  43
  44     if not page_action.IsGestureSourceTypeSupported(tab, 'touch'):
  45       raise page_action.PageActionNotSupported(
  46           'Touch input not supported for this browser')
  47
  48     tab.ExecuteJavaScript("""
  49         window.__swipeActionDone = false;
  50         window.__swipeAction = new __SwipeAction(function() {
  51           window.__swipeActionDone = true;
  52         });""")
  53
  54   def RunAction(self, tab):
  55     if (self._selector is None and self._text is None and
  56         self._element_function is None):
  57       self._element_function = '(document.scrollingElement || document.body)'
  58     code = js_template.Render('''
  59         function(element, info) {
  60           if (!element) {
  61             throw Error('Cannot find element: ' + info);
  62           }
  63           window.__swipeAction.start({
  64             element: element,
  65             left_start_ratio: {{ left_start_ratio }},
  66             top_start_ratio: {{ top_start_ratio }},
  67             direction: {{ direction }},
  68             distance: {{ distance }},
  69             speed: {{ speed }}
  70           });
  71         }''',
  72         left_start_ratio=self._left_start_ratio,
  73         top_start_ratio=self._top_start_ratio,
  74         direction=self._direction,
  75         distance=self._distance,
  76         speed=self._speed)
  77     page_action.EvaluateCallbackWithElement(
  78         tab, code, selector=self._selector, text=self._text,
  79         element_function=self._element_function)
  80     tab.WaitForJavaScriptCondition('window.__swipeActionDone', timeout=60)