forcetouch events support

This enables Apple forcetouch DOM events. It requires the preference dom.forcetouch.enabled.

The DOM events are described here:
- https://developer.apple.com/library/mac/documentation/AppleApplications/Conceptual/SafariJSProgTopics/RespondingtoForceTouchEventsfromJavaScript.html

The Cocoa mechanism is documented here:
- https://developer.apple.com/library/mac/documentation/Cocoa/Reference/ApplicationKit/Classes/NSEvent_Class/#//apple_ref/doc/uid/20000016-SW274

1 files changed, 7 insertions, 1 deletions

diff --git a/components/script/script_thread.rs b/components/script/script_thread.rs
index 5cd38e80532..6726a6ca4e2 100644
--- a/components/script/script_thread.rs
+++ b/components/script/script_thread.rs
@@ -79,7 +79,7 @@ use parse::xml::{self, parse_xml};
 use profile_traits::mem::{self, OpaqueSender, Report, ReportKind, ReportsChan};
 use profile_traits::time::{self, ProfilerCategory, profile};
 use script_traits::CompositorEvent::{KeyEvent, MouseButtonEvent, MouseMoveEvent, ResizeEvent};
-use script_traits::CompositorEvent::{TouchEvent};
+use script_traits::CompositorEvent::{TouchEvent, TouchpadPressureEvent};
 use script_traits::{CompositorEvent, ConstellationControlMsg, EventResult};
 use script_traits::{InitialScriptState, MouseButton, MouseEventType, MozBrowserEvent, NewLayoutInfo};
 use script_traits::{LayoutMsg, OpaqueScriptLayoutChannel, ScriptMsg as ConstellationMsg};
@@ -1969,6 +1969,12 @@ impl ScriptThread {
                 }
             }
 
+            TouchpadPressureEvent(point, pressure, phase) => {
+                let page = get_page(&self.root_page(), pipeline_id);
+                let document = page.document();
+                document.r().handle_touchpad_pressure_event(self.js_runtime.rt(), point, pressure, phase);
+            }
+
             KeyEvent(key, state, modifiers) => {
                 let page = get_page(&self.root_page(), pipeline_id);
                 let document = page.document();