/// <summary>Moves the focus to the previous element as defined by tabindex.
/// All elements with an explicit tabindex are defined as being before all
/// elements which don't have an explicit tabindex.</summary>
/// <returns>True if anything happened.</returns>
public bool TabPrevious()
{
// These track the current best found element.
int bestSoFar = int.MaxValue;
HtmlElement best = null;
// Get the current focused element:
HtmlElement focused = htmlActiveElement;
if (focused == null)
{
// Haven't got one - hunt for a node with *no* tabindex first:
body.SearchChildFocusable(null, false, -1, ref bestSoFar, ref best);
if (best == null)
{
// Find the last node with a tabIndex:
body.SearchChildFocusable(null, false, int.MaxValue, ref bestSoFar, ref best);
}
}
else
{
best = focused.GetFocusedPrevious();
}
if (best != null)
{
// Focus it now:
best.focus();
return(true);
}
return(false);
}
/// <summary>If there is an element focused, this will move focus to the nearest focusable element to the right.
/// You can define 'focusable' on any element, or use a tag that is focusable anyway (input, textarea, a etc).
/// You can also define focus-right="anElementID" to override which element will be focused next.</summary>
public void MoveFocusRight()
{
if (htmlActiveElement == null)
{
return;
}
// Grab the element to the right:
HtmlElement element = htmlActiveElement.GetFocusableRight();
if (element != null)
{
// Focus it:
element.focus();
}
}
/// <summary>If there is an element focused, this will move focus to the nearest focusable element below.
/// You can define 'focusable' on any element, or use a tag that is focusable anyway (input, textarea, a etc).
/// You can also define focus-down="anElementID" to override which element will be focused next.</summary>
public void MoveFocusDown()
{
if (htmlActiveElement == null)
{
return;
}
// Grab the element below:
HtmlElement element = htmlActiveElement.GetFocusableBelow();
if (element != null)
{
// Focus it:
element.focus();
}
}
/// <summary>If there is an element focused, this will move focus to the nearest focusable element above.
/// You can define 'focusable' on any element, or use a tag that is focusable anyway (input, textarea, a etc).
/// You can also define focus-up="anElementID" to override which element will be focused next.</summary>
public void MoveFocusUp()
{
if (htmlActiveElement == null)
{
return;
}
// Grab the element above:
HtmlElement element = htmlActiveElement.GetFocusableAbove();
if (element != null)
{
// Focus it:
element.focus();
}
}
/// <summary>Moves the focus to the next element as defined by tabindex.
/// All elements with an explicit tabindex are defined as being before all
/// elements which don't have an explicit tabindex.</summary>
/// <returns>True if anything happened.</returns>
public bool TabNext()
{
// - From the current focused element, we check all elements after it to see which
// has the 'closest' tabIndex to currentIndex.
// - If there are no immediate matches, we wrap around the DOM and continue searching
// - If there is no current focused element, we start at very top and don't wrap at all.
// These track the current best found element.
int bestSoFar = int.MaxValue;
HtmlElement best = null;
// Get the current focused element:
HtmlElement focused = htmlActiveElement;
if (focused == null)
{
// Haven't got one - hunt for a node with a tabindex first:
body.SearchChildFocusable(null, true, 0, ref bestSoFar, ref best);
if (best == null)
{
// Find the first focusable node:
body.SearchChildFocusable(null, true, -1, ref bestSoFar, ref best);
}
}
else
{
best = focused.GetFocusedNext();
}
if (best != null)
{
// Focus it now:
best.focus();
return(true);
}
return(false);
}
/// <summary>Updates mouse overs, touches and the mouse position.</summary>
public static void Update(){
InputPointer pointer;
// Look out for any 'new' touch events:
int touchCount=UnityEngine.Input.touchCount;
if(touchCount>0){
// For each one..
for(int i=0;i<touchCount;i++){
// Get the info:
Touch touch=UnityEngine.Input.GetTouch(i);
pointer=null;
// Already seen this one?
// There won't be many touches so a straight linear scan is by far the fastest option here.
// (It's much better than a dictionary).
for(int p=InputPointer.PointerCount-1;p>=0;p--){
// Get the pointer:
InputPointer current=InputPointer.AllRaw[p];
if(current.ID==touch.fingerId){
// Got it!
pointer=current;
break;
}
}
TouchPointer tp=null;
if(pointer==null){
// Touch start! A new finger has been seen for the first time.
#if UNITY_5_3_OR_NEWER
// Could be a stylus:
if(touch.type==TouchType.Stylus){
tp=new StylusPointer();
}else{
tp=new FingerPointer();
}
#else
// Can only assume it's a finger here:
tp=new FingerPointer();
#endif
// Add it to the available set:
tp.ID=touch.fingerId;
tp.Add();
}else{
// Apply latest info:
tp=(pointer as TouchPointer);
}
// Mark it as still alive so it doesn't get removed shortly.
tp.StillAlive=true;
tp.LatestPosition=touch.position;
#if UNITY_5_3_OR_NEWER
tp.Radius=touch.radius;
tp.RadiusVariance=touch.radiusVariance;
tp.LatestPressure=touch.pressure;
// Is it a stylus?
if(tp is StylusPointer){
tp.UpdateStylus(touch.azimuthAngle,touch.altitudeAngle);
}
// Always a pressure of 1 otherwise (the default).
#endif
}
}
// Update each pointer, invalidating itself only if it has moved:
bool pointerRemoved=false;
for(int i=InputPointer.PointerCount-1;i>=0;i--){
// Get the pointer:
pointer=InputPointer.AllRaw[i];
// Update its position and state now:
Vector2 delta;
bool moved=pointer.Relocate(out delta);
if(pointer.Removed){
// It got removed! (E.g. a finger left the screen).
pointerRemoved=true;
// Clear pressure (mouseup etc):
pointer.SetPressure(0f);
if(pointer.ActiveOverTarget!=null){
// Shared event:
MouseEvent mouseEvent=new MouseEvent(pointer.ScreenX,pointer.ScreenY,pointer.ButtonID,false);
mouseEvent.trigger=pointer;
mouseEvent.clientX=pointer.DocumentX;
mouseEvent.clientY=pointer.DocumentY;
mouseEvent.SetModifiers();
mouseEvent.SetTrusted();
// Trigger a mouseout (bubbles):
mouseEvent.EventType="mouseout";
mouseEvent.SetTrusted();
pointer.ActiveOverTarget.dispatchEvent(mouseEvent);
// And a mouseleave (doesn't bubble).
mouseEvent.Reset();
mouseEvent.bubbles=false;
mouseEvent.EventType="mouseleave";
pointer.ActiveOverTarget.dispatchEvent(mouseEvent);
// Update the CSS (hover; typically out):
IRenderableNode irn = (pointer.ActiveOverTarget as IRenderableNode);
if(irn!=null){
irn.ComputedStyle.RefreshLocal(true);
}
}
continue;
}
// If the pointer is invalid or they all are:
if(moved || PointersInvalid){
// Figure out what's under it. This takes its pos on the screen
// and figures out what's there, as well as converting the position
// to one which is relative to the document (used by e.g. a WorldUI).
float documentX=pointer.ScreenX;
float documentY=pointer.ScreenY;
EventTarget newActiveOver=TargetFromPoint(ref documentX,ref documentY,pointer);
// Update docX/Y:
pointer.DocumentX=documentX;
pointer.DocumentY=documentY;
// Get the old one:
EventTarget oldActiveOver=pointer.ActiveOverTarget;
// Shared event:
MouseEvent mouseEvent=new MouseEvent(documentX,documentY,pointer.ButtonID,pointer.IsDown);
mouseEvent.trigger=pointer;
mouseEvent.clientX=pointer.DocumentX;
mouseEvent.clientY=pointer.DocumentY;
mouseEvent.SetModifiers();
mouseEvent.SetTrusted();
// If overElement has changed from the previous one..
if(newActiveOver!=oldActiveOver){
if(oldActiveOver!=null){
// Trigger a mouseout (bubbles):
mouseEvent.EventType="mouseout";
mouseEvent.SetTrusted();
mouseEvent.relatedTarget=newActiveOver;
oldActiveOver.dispatchEvent(mouseEvent);
// And a mouseleave (doesn't bubble).
// Only triggered if newActiveOver is *not* the parent of oldActiveOver.
if(oldActiveOver.eventTargetParentNode!=newActiveOver){
mouseEvent.Reset();
mouseEvent.bubbles=false;
mouseEvent.EventType="mouseleave";
mouseEvent.relatedTarget=newActiveOver;
oldActiveOver.dispatchEvent(mouseEvent);
}
}
// Update it:
pointer.ActiveOverTarget=newActiveOver;
if(oldActiveOver!=null){
// Update the CSS (hover; typically out):
IRenderableNode irn = (oldActiveOver as IRenderableNode);
if(irn!=null){
irn.ComputedStyle.RefreshLocal(true);
}
}
if(newActiveOver!=null){
// Update the CSS (hover; typically in)
IRenderableNode irn = (newActiveOver as IRenderableNode);
if(irn!=null){
irn.ComputedStyle.RefreshLocal(true);
}
}
// Trigger a mouseover (bubbles):
mouseEvent.Reset();
mouseEvent.bubbles=true;
mouseEvent.relatedTarget=oldActiveOver;
mouseEvent.EventType="mouseover";
if(newActiveOver==null){
// Clear the main UI tooltip:
UI.document.tooltip=null;
// Dispatch to unhandled:
Unhandled.dispatchEvent(mouseEvent);
}else{
newActiveOver.dispatchEvent(mouseEvent);
// Set the tooltip if we've got one:
UI.document.tooltip=newActiveOver.getTitle();
// And a mouseenter (doesn't bubble).
// Only triggered if newActiveOver is *not* a child of oldActiveOver.
if(newActiveOver.eventTargetParentNode!=oldActiveOver){
mouseEvent.Reset();
mouseEvent.bubbles=false;
mouseEvent.EventType="mouseenter";
mouseEvent.relatedTarget=oldActiveOver;
newActiveOver.dispatchEvent(mouseEvent);
}
}
}
if(moved){
// Trigger a mousemove event:
mouseEvent.Reset();
mouseEvent.bubbles=true;
mouseEvent.EventType="mousemove";
if(newActiveOver==null){
Unhandled.dispatchEvent(mouseEvent);
}else{
newActiveOver.dispatchEvent(mouseEvent);
}
}
}
// If the pointer requires pressure changes..
if(pointer.FireTouchEvents){
// Set the pressure (which triggers mousedown/up for us too):
TouchPointer tp=(pointer as TouchPointer);
tp.SetPressure(tp.LatestPressure);
// We test touch move down here because it must happen after we've
// transferred 'ActiveOver' to 'ActiveDown' which happens inside SetPressure.
// Touch events are triggered on the element that was pressed down on
// (even if we've moved beyond it's bounds).
if(moved){
// Trigger a touchmove event too:
TouchEvent te=new TouchEvent("touchmove");
te.trigger=pointer;
te.SetTrusted();
te.clientX=pointer.DocumentX;
te.clientY=pointer.DocumentY;
te.SetModifiers();
if(pointer.ActivePressedTarget==null){
// Trigger on unhandled:
Unhandled.dispatchEvent(te);
}else{
pointer.ActivePressedTarget.dispatchEvent(te);
}
}
}
// Test for dragstart
if(pointer.IsDown && moved){
// How far has it moved since it went down?
if(pointer.DragStatus==InputPointer.DRAG_UNKNOWN){
// Is the element we pressed (or any of its parents) draggable?
if(pointer.MinDragDistance==0f){
// Find if we've got a draggable element:
pointer.ActiveUpdatingTarget=GetDraggable(pointer.ActivePressedTarget as Element);
// Find the min drag distance:
pointer.MinDragDistance=pointer.GetMinDragDistance();
}
if(pointer.MovedBeyondDragDistance){
// Possibly dragging.
// Actually marked as 'draggable'?
if(pointer.ActiveUpdatingTarget!=null){
// Try start drag:
DragEvent de=new DragEvent("dragstart");
de.trigger=pointer;
de.SetModifiers();
de.SetTrusted();
de.deltaX=delta.x;
de.deltaY=delta.y;
de.clientX=pointer.DocumentX;
de.clientY=pointer.DocumentY;
if(pointer.ActivePressedTarget.dispatchEvent(de)){
// We're now dragging!
pointer.DragStatus=InputPointer.DRAGGING;
}else{
// It didn't allow it. This status prevents it from spamming dragstart.
pointer.DragStatus=InputPointer.DRAG_NOT_AVAILABLE;
}
}else{
// Selectable?
IRenderableNode irn = (pointer.ActivePressedTarget as IRenderableNode);
if(irn!=null){
// It's renderable; can it be selected?
ComputedStyle cs=irn.ComputedStyle;
Css.Value userSelect=cs[Css.Properties.UserSelect.GlobalProperty];
if(userSelect!=null && !(userSelect.IsType(typeof(Css.Keywords.None))) && !userSelect.IsAuto){
// Selectable!
Css.Properties.UserSelect.BeginSelect(pointer,userSelect);
// Set status:
pointer.DragStatus=InputPointer.SELECTING;
// Focus it if needed:
HtmlElement html=(pointer.ActivePressedTarget as HtmlElement);
if(html!=null){
html.focus();
}
}else{
// This status prevents it from spamming, at least until we release.
pointer.DragStatus=InputPointer.DRAG_NOT_AVAILABLE;
}
}
}
}
}else if(pointer.DragStatus==InputPointer.DRAGGING){
// Move the dragged element (the event goes to everybody):
if(pointer.ActivePressedTarget!=null){
DragEvent de=new DragEvent("drag");
de.trigger=pointer;
de.SetModifiers();
de.SetTrusted();
de.deltaX=delta.x;
de.deltaY=delta.y;
de.clientX=pointer.DocumentX;
de.clientY=pointer.DocumentY;
if(pointer.ActivePressedTarget.dispatchEvent(de)){
// Note that onDrag runs on the *dragging* element only.
Element dragging;
if(pointer.ActiveUpdatingTarget==null){
dragging = (Element)pointer.ActivePressedTarget;
}else{
dragging = (Element)pointer.ActiveUpdatingTarget;
}
if(dragging.OnDrag(de)){
// Run the PowerUI default - move the element:
RenderableData renderData=(dragging as IRenderableNode).RenderData;
// Get the "actual" left/top values:
if(renderData.FirstBox!=null){
// Get computed style:
ComputedStyle cs=renderData.computedStyle;
// Fix if it isn't already:
if(renderData.FirstBox.PositionMode!=PositionMode.Fixed){
cs.ChangeTagProperty("position","fixed");
}
// Get top/left pos:
float left=renderData.FirstBox.X+delta.x;
float top=renderData.FirstBox.Y+delta.y;
// Write it back out:
cs.ChangeTagProperty("left",new Css.Units.DecimalUnit(left));
cs.ChangeTagProperty("top",new Css.Units.DecimalUnit(top));
}
}
}
}
}else if(pointer.DragStatus==InputPointer.SELECTING){
// Update the selection.
if(pointer.ActivePressedTarget!=null){
DragEvent de=new DragEvent("drag");
de.trigger=pointer;
de.SetModifiers();
de.SetTrusted();
de.clientX=pointer.DocumentX;
de.clientY=pointer.DocumentY;
if(pointer.ActivePressedTarget.dispatchEvent(de)){
// We can only select elements:
Element pressedElement = (Element)pointer.ActivePressedTarget;
// Get the current selection:
Selection s=(pressedElement.document as HtmlDocument).getSelection();
// Safety check:
if(s.ranges.Count>0){
// Get the range:
Range range=s.ranges[0];
// Get text node:
RenderableTextNode htn=(range.startContainer as RenderableTextNode);
if(htn!=null){
// Get the new end index:
int endIndex=htn.LetterIndex(pointer.DocumentX,pointer.DocumentY);
// Update:
range.endOffset=endIndex;
// Flush:
s.UpdateSelection(true,range);
}
}
}
}
}
}
}
if(pointerRemoved){
// Tidy the removed ones:
InputPointer.Tidy();
}
// Clear invalidated state:
PointersInvalid=false;
#if MOBILE
// Handle mobile keyboard:
if(MobileKeyboard!=null){
HandleMobileKeyboardInput();
}
#endif
}