New event records for key and mouse handlers

2 files changed, 63 insertions, 20 deletions

diff --git a/lib/js/urweb.js b/lib/js/urweb.js
index 509ff007..5846863a 100644
--- a/lib/js/urweb.js
+++ b/lib/js/urweb.js
@@ -441,22 +441,55 @@ function servErr(s) {
     window.setTimeout(function () { runHandlers("Server", serverHandlers, s); }, 0);
 }
 
-// Key events
+// Key and mouse events
 
 var uw_event = null;
 
-function kc() {
-    return window.event ? event.keyCode : (uw_event ? uw_event.which : 0);
+function uw_getEvent() {
+    return window.event ? window.event : uw_event;
 }
 
+function firstGood(x, y) {
+    if (x == undefined || x == 0)
+        return y;
+    else
+        return x;
+}
+
+function uw_mouseEvent() {
+    var ev = uw_getEvent();
+
+    return {_ScreenX : firstGood(ev.screenX, 0),
+            _ScreenY : firstGood(ev.screenY, 0),
+            _ClientX : firstGood(ev.clientX, 0),
+            _ClientY : firstGood(ev.clientY, 0),
+            _CtrlKey : firstGood(ev.ctrlKey, false),
+            _ShiftKey : firstGood(ev.shiftKey, false),
+            _AltKey : firstGood(ev.altKey, false),
+            _MetaKey : firstGood(ev.metaKey, false),
+            _Button : ev.button == 2 ? "Right" : ev.button == 1 ? "Middle" : "Left"};
+}
+
+function uw_keyEvent() {
+    var ev = uw_getEvent();
+
+    return {_KeyCode : firstGood(ev.keyCode, ev.which),
+            _CtrlKey : firstGood(ev.ctrlKey, false),
+            _ShiftKey : firstGood(ev.shiftKey, false),
+            _AltKey : firstGood(ev.altKey, false),
+            _MetaKey : firstGood(ev.metaKey, false)};
+}
+
+
+
 // Document events
 
 function uw_handler(name, f) {
     var old = document[name];
     if (old == undefined)
-        document[name] = function(event) { uw_event = event; execF(f); };
+        document[name] = function(event) { uw_event = event; execF(execF(f, uw_mouseEvent())); };
     else
-        document[name] = function(event) { uw_event = event; old(); execF(f); };
+        document[name] = function(event) { uw_event = event; old(); execF(execF(f, uw_mouseEvent())); };
 }
 
 function uw_onClick(f) {
@@ -478,9 +511,9 @@ function uw_onMouseup(f) {
 function uw_keyHandler(name, f) {
     var old = document[name];
     if (old == undefined)
-        document[name] = function(event) { uw_event = event; execF(execF(f, kc())); };
+        document[name] = function(event) { uw_event = event; execF(execF(f, uw_keyEvent())); };
     else
-        document[name] = function(event) { uw_event = event; old(); execF(execF(f, kc())); };
+        document[name] = function(event) { uw_event = event; old(); execF(execF(f, uw_keyEvent())); };
 }
 
 function uw_onKeydown(f) {
diff --git a/lib/ur/basis.urs b/lib/ur/basis.urs
index bea6e105..cd38c783 100644
--- a/lib/ur/basis.urs
+++ b/lib/ur/basis.urs
@@ -784,12 +784,22 @@ con bodyTagStandalone = fn (attrs :: {Type}) =>
 val br : bodyTagStandalone [Id = id]
 
 con focusEvents = [Onblur = transaction unit, Onfocus = transaction unit]
-con mouseEvents = [Onclick = transaction unit, Ondblclick = transaction unit,
-                   Onmousedown = transaction unit, Onmousemove = transaction unit,
-                   Onmouseout = transaction unit, Onmouseover = transaction unit,
-                   Onmouseup = transaction unit]
-con keyEvents = [Onkeydown = int -> transaction unit, Onkeypress = int -> transaction unit,
-                 Onkeyup = int -> transaction unit]
+
+datatype mouseButton = Left | Right | Middle
+
+type mouseEvent = { ScreenX : int, ScreenY : int, ClientX : int, ClientY : int,
+                    CtrlKey : bool, ShiftKey : bool, AltKey : bool, MetaKey : bool,
+                    Button : mouseButton }
+
+con mouseEvents = map (fn _ :: Unit => mouseEvent -> transaction unit)
+                          [Onclick, Ondblclick, Onmousedown, Onmousemove, Onmouseout, Onmouseover, Onmouseup]
+
+type keyEvent = { KeyCode : int,
+                  CtrlKey : bool, ShiftKey : bool, AltKey : bool, MetaKey : bool }
+
+con keyEvents = map (fn _ :: Unit => keyEvent -> transaction unit)
+                        [Onkeydown, Onkeypress, Onkeyup]
+
 (* Key arguments are character codes. *)
 con resizeEvents = [Onresize = transaction unit]
 con scrollEvents = [Onscroll = transaction unit]
@@ -955,13 +965,13 @@ val onDisconnect : transaction unit -> transaction unit
 val onServerError : (string -> transaction unit) -> transaction unit
 
 (* More standard document-level JavaScript handlers *)
-val onClick : transaction unit -> transaction unit
-val onDblclick : transaction unit -> transaction unit
-val onKeydown : (int -> transaction unit) -> transaction unit
-val onKeypress : (int -> transaction unit) -> transaction unit
-val onKeyup : (int -> transaction unit) -> transaction unit
-val onMousedown : transaction unit -> transaction unit
-val onMouseup : transaction unit -> transaction unit
+val onClick : (mouseEvent -> transaction unit) -> transaction unit
+val onDblclick : (mouseEvent -> transaction unit) -> transaction unit
+val onKeydown : (keyEvent -> transaction unit) -> transaction unit
+val onKeypress : (keyEvent -> transaction unit) -> transaction unit
+val onKeyup : (keyEvent -> transaction unit) -> transaction unit
+val onMousedown : (mouseEvent -> transaction unit) -> transaction unit
+val onMouseup : (mouseEvent -> transaction unit) -> transaction unit
 
 (* Prevents default handling of current event *)
 val preventDefault : transaction unit