diff -r 000000000000 -r dd21522fd290 webengine/osswebengine/WebKit/s60/misc/WebTabbedNavigation.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/webengine/osswebengine/WebKit/s60/misc/WebTabbedNavigation.cpp	Mon Mar 30 12:54:55 2009 +0300
@@ -0,0 +1,321 @@
+/*
+* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the License "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:  Frame in webkit side
+*
+*/
+
+#include "config.h"
+#include <../bidi.h>
+#include <e32math.h>
+#include <e32base.h>
+#include "WebTabbedNavigation.h"
+#include "WebUtil.h"
+#include "Document.h"
+#include "Frame.h"
+#include "HTMLNames.h"
+#include "FrameTree.h"
+#include "BrCtlDefs.h"
+#include "WebCursor.h"
+#include "StaticObjectsContainer.h"
+#include "Page.h"
+#include "WebView.h"
+#include "WebFrame.h"
+#include "WebFrameView.h"
+#include <wtf/RefPtr.h>
+#include "EventHandler.h"
+#include "webkitlogger.h"
+#include "FocusController.h"
+#include "RenderListBox.h"
+#include "HTMLSelectElement.h"
+
+using namespace WebCore;
+using namespace HTMLNames;
+
+const int KMaxJumpPercent = 90;
+const int KScrollWhenNotFound = 5;
+
+WebTabbedNavigation::WebTabbedNavigation(WebView* webView)
+{
+    m_webView = webView;
+    clear();
+}
+
+WebTabbedNavigation::~WebTabbedNavigation()
+{
+}
+
+void WebTabbedNavigation::clear()
+{
+    // Different initialization for mirrored layouts?
+    m_selectedElementRect.SetRect(0, 0, m_webView->Rect().Width(), 0);
+    m_initializedForPage = false;
+    m_firstNavigationOnPage = true;
+    m_focusPosition = TPoint(0,0);
+    m_node = NULL;
+}
+
+void WebTabbedNavigation::initializeForPage()
+{
+    if (!m_initializedForPage) {
+        if (navigate(0, 1)) {
+            m_initializedForPage = true;
+            m_firstNavigationOnPage = false;
+        }
+    }
+}
+
+
+bool WebTabbedNavigation::navigate(int horizontalDir, int verticalDir)
+{
+    if (handleSelectElementScrolling(m_webView, verticalDir)) {
+        StaticObjectsContainer::instance()->webCursor()->cursorUpdate(true);
+        return true;
+    }
+    bool ret = m_firstNavigationOnPage;
+    Frame* focusedFrame = m_webView->page()->focusController()->focusedFrame();
+    if (focusedFrame == NULL) focusedFrame = m_webView->page()->mainFrame();
+    if (focusedFrame->document()) {
+        Node* focusNode = focusedFrame->document()->focusedNode();
+        if (focusNode) {
+            m_node = focusNode;
+            m_selectedElementRect = focusNode->getRect().Rect();
+            Frame* frame = focusNode->document()->frame();
+            m_selectedElementRect = TRect(kit(frame)->frameView()->frameCoordsInViewCoords(m_selectedElementRect.iTl), 
+                kit(frame)->frameView()->frameCoordsInViewCoords(m_selectedElementRect.iBr));
+        }
+    }
+    TPoint oldFocusPoint(m_focusPosition);
+    // Move the focus to the edge of the current object
+    if (horizontalDir == -1) {
+        m_focusPosition.iX = m_selectedElementRect.iTl.iX;
+    }
+    else if (horizontalDir == 1) {
+        m_focusPosition.iX = m_selectedElementRect.iBr.iX;
+    }
+    if (verticalDir == -1) {
+        m_focusPosition.iY = m_selectedElementRect.iTl.iY;
+    }
+    else if (verticalDir == 1) {
+        m_focusPosition.iY = m_selectedElementRect.iBr.iY;
+    }
+    wkDebug()<<"WebTabbedNavigation::navigate. x = "<<m_focusPosition.iX<<" y = "<<m_focusPosition.iY<<flush;
+    wkDebug()<<"x1 = "<<m_selectedElementRect.iTl.iX<<" y1 = "<<m_selectedElementRect.iTl.iY<<" x2 = "<<m_selectedElementRect.iBr.iX<<" y2 = "<<m_selectedElementRect.iBr.iY<<flush;
+    
+    // Adjust the move
+    TPoint br;
+    br.iX = m_webView->Rect().iBr.iX * KMaxJumpPercent / m_webView->scalingFactor();
+    br.iY = m_webView->Rect().iBr.iY * KMaxJumpPercent / m_webView->scalingFactor();
+    TRect view;
+    // define the view rect where we are looking for a match
+    if (horizontalDir == -1) {
+        view.SetRect(m_focusPosition.iX - br.iX, m_focusPosition.iY - br.iY, m_focusPosition.iX, m_focusPosition.iY + br.iY);
+    }
+    else if (horizontalDir == 1) {
+        view.SetRect(m_focusPosition.iX, m_focusPosition.iY - br.iY, m_focusPosition.iX + br.iX, m_focusPosition.iY + br.iY);
+    }
+    else if (verticalDir == -1) {
+        view.SetRect(m_focusPosition.iX - br.iX, m_focusPosition.iY - br.iY, m_focusPosition.iX + br.iX, m_focusPosition.iY);
+    }
+    else if (verticalDir == 1) {
+        view.SetRect(m_focusPosition.iX - br.iX, m_focusPosition.iY, m_focusPosition.iX + br.iX, m_focusPosition.iY + br.iY);
+    }
+    //wkDebug()<<"view x1 = "<<view.iTl.iX<<" y1 = "<<view.iTl.iY<<" x2 = "<<view.iBr.iX<<" y2 = "<<view.iBr.iY<<flush;
+    // walk all focusable nodes
+    Frame* f = m_webView->page()->mainFrame();
+    TPoint selectedPoint(0, 0);
+    TRect selectedRect(0, 0, 0, 0);
+    Node* selectedNode = NULL;
+    while ( f ) {
+        PassRefPtr<HTMLCollection> elements = f->document()->all();   
+        TRect frameRect = kit(f)->frameView()->rectInGlobalCoords();
+        for (Node* n = elements->firstItem(); n; n = elements->nextItem()) {
+            if (n == m_node) continue;
+            if (n->isFocusable() && n->isElementNode() && !n->hasTagName(iframeTag) && !n->hasTagName(frameTag)) {
+                // Does the node intersect with the view rect?
+                TRect nodeRect = n->getRect().Rect();
+                //wkDebug()<<"Each node rect x1 = "<<nodeRect.iTl.iX<<" y1 = "<<nodeRect.iTl.iY<<" x2 = "<<nodeRect.iBr.iX<<" y2 = "<<nodeRect.iBr.iY<<flush;
+                nodeRect = TRect(kit(f)->frameView()->frameCoordsInViewCoords(nodeRect.iTl), 
+                    kit(f)->frameView()->frameCoordsInViewCoords(nodeRect.iBr));
+                if (nodeRect.Intersects(view)) {
+                    // Compare nodes and select the best fit
+                    TPoint newFocusPoint = potentialFocusPoint(horizontalDir, verticalDir, nodeRect);
+                    wkDebug()<<"Matching node rect x1 = "<<nodeRect.iTl.iX<<" y1 = "<<nodeRect.iTl.iY<<" x2 = "<<nodeRect.iBr.iX<<" y2 = "<<nodeRect.iBr.iY<<flush;
+                    if (selectNode(horizontalDir, verticalDir, selectedRect, nodeRect, selectedPoint, newFocusPoint)) {
+                        // found a better fit
+                        selectedNode = n;
+                        selectedRect.SetRect(nodeRect.iTl, nodeRect.iBr);
+                        selectedPoint = newFocusPoint;
+                    }
+                } // if (nodeRect.Intersects(rect[i])
+            } // if (n->isFocusable() && n->isElementNode())
+        } // for (Node* n = elements->firstItem(); n; n = elements->nextItem())
+        f = f->tree()->traverseNext();
+    } // while ( f )
+    // Remember new selection
+    TPoint contentPos = m_webView->mainFrame()->frameView()->contentPos();
+    if (selectedNode) {
+        // Found an element to jump to
+        m_selectedElementRect = selectedRect;
+        m_focusPosition = selectedPoint;
+        m_node = selectedNode;
+        selectedNode->document()->setFocusedNode(selectedNode);
+         m_webView->page()->focusController()->setFocusedFrame(selectedNode->document()->frame());
+        // And scroll to the selected element
+        RenderLayer *layer = selectedNode->renderer()->enclosingLayer();
+        if (layer) {
+            layer->scrollRectToVisible(selectedNode->getRect(), RenderLayer::gAlignCenterIfNeeded, RenderLayer::gAlignCenterIfNeeded);
+            TRect newRect = TRect(kit(selectedNode->document()->frame())->frameView()->frameCoordsInViewCoords(selectedNode->getRect().Rect().iTl), 
+                kit(selectedNode->document()->frame())->frameView()->frameCoordsInViewCoords(selectedNode->getRect().Rect().iBr));
+            selectedPoint += (newRect.iTl - selectedRect.iTl);
+            m_focusPosition = selectedPoint;
+            selectedRect = newRect;
+            m_selectedElementRect = selectedRect;
+            StaticObjectsContainer::instance()->webCursor()->updatePositionAndElemType(selectedPoint);
+            // special handling for Select-Multi
+            if (m_webView->focusedElementType() == TBrCtlDefs::EElementSelectMultiBox) {
+                Element* e = static_cast<Element*>(m_node);
+                if (e->isControl()) {
+                    HTMLGenericFormElement* ie = static_cast<HTMLGenericFormElement*>( e );
+                    if (ie->type() == "select-multiple") {
+                        RenderListBox* render = static_cast<RenderListBox*>(e->renderer());
+                        HTMLSelectElement* selectElement = static_cast<HTMLSelectElement*>( e );
+                        IntRect itemRect = render->itemRect(0, 0, 0);
+                        TPoint cursorPoint(StaticObjectsContainer::instance()->webCursor()->position());
+                        int gap = (20 * m_webView->scalingFactor()) / 100;
+                        cursorPoint.iX = max(m_focusPosition.iX,  m_selectedElementRect.iTl.iX + gap);
+                        cursorPoint.iX = std::min(cursorPoint.iX,  m_selectedElementRect.iBr.iX - gap);
+                        if (verticalDir == -1) {
+                            cursorPoint.iY -= (itemRect.height() * m_webView->scalingFactor()) / 125;
+                        }
+                        if (cursorPoint != StaticObjectsContainer::instance()->webCursor()->position()) {
+                            StaticObjectsContainer::instance()->webCursor()->setPosition(cursorPoint);
+                        }
+                    }
+                }
+            }
+            TPointerEvent event;
+            event.iPosition = StaticObjectsContainer::instance()->webCursor()->position();
+            event.iModifiers = 0;
+            event.iType = TPointerEvent::EMove;
+            core(m_webView->mainFrame())->eventHandler()->handleMouseMoveEvent(PlatformMouseEvent(event));            
+            wkDebug()<<"Focus position x = "<<selectedPoint.iX<<" y = "<<selectedPoint.iY<<flush;
+            ret = true;
+        }
+    }
+    else {
+        if (!m_firstNavigationOnPage) {
+            m_webView->mainFrame()->frameView()->scrollTo(contentPos + TPoint(horizontalDir * m_webView->Rect().Width() / KScrollWhenNotFound, verticalDir * m_webView->Rect().Height() / KScrollWhenNotFound));
+            TPoint diff(m_webView->mainFrame()->frameView()->contentPos() - contentPos);
+            if (diff.iX || diff.iY) {
+                m_selectedElementRect.Move(diff);
+                m_focusPosition = oldFocusPoint + diff;
+                m_node = NULL;
+                StaticObjectsContainer::instance()->webCursor()->updatePositionAndElemType(m_focusPosition - m_webView->mainFrame()->frameView()->contentPos());
+                ret = true;
+            }
+        }
+    }
+    StaticObjectsContainer::instance()->webCursor()->cursorUpdate(true);
+    return ret;
+}
+
+bool WebTabbedNavigation::selectNode(int horizontalDir, int verticalDir, TRect& selectedRect, TRect& newNodeRect, TPoint& selectedPoint, TPoint& newFocusPoint)
+{
+    if (selectedPoint == TPoint(0, 0)) { // first selected node fixme: ensure not to divert direction too much
+        return true;
+    }
+    int selectedDist = distanceFunction(horizontalDir, verticalDir, selectedRect, selectedPoint);
+    int newDist = distanceFunction(horizontalDir, verticalDir, newNodeRect, newFocusPoint);
+    wkDebug()<<"WebTabbedNavigation::selectNode. selected x = "<<selectedPoint.iX<<" y = "<<selectedPoint.iY<<" new x = "<<newFocusPoint.iX<<" y = "<<newFocusPoint.iY<<"old distance = "<<selectedDist<<" new distance = "<<newDist<<flush;
+    return newDist < selectedDist;
+}
+
+TPoint WebTabbedNavigation::potentialFocusPoint(int horizontalDir, int verticalDir, TRect& newNodeRect)
+{
+    int x = 0;
+    int y = 0;
+    // Focus points must be inside the element and not on the border in order for the outline to be drawn.
+    if (horizontalDir) { // horizontal
+        if (horizontalDir == -1) { // left
+            x = newNodeRect.iBr.iX - 1;
+        }
+        else if (horizontalDir == 1) { // right
+            x = newNodeRect.iTl.iX + 1;
+        }
+        if (newNodeRect.iBr.iY < m_focusPosition.iY) {
+            y = newNodeRect.iBr.iY - 1;
+        }
+        else if (newNodeRect.iTl.iY > m_focusPosition.iY) {
+            y = newNodeRect.iTl.iY + 1;
+        }
+        else {
+            y = m_focusPosition.iY;
+        }
+    }
+    else { // vertical
+        if (verticalDir == -1) { // up
+            y = newNodeRect.iBr.iY - 1;
+        }
+        else if (verticalDir == 1) { // down
+            y = newNodeRect.iTl.iY + 1;
+        }
+        if (newNodeRect.iBr.iX < m_focusPosition.iX) {
+            x = newNodeRect.iBr.iX - 1;
+        }
+        else if (newNodeRect.iTl.iX > m_focusPosition.iX) {
+            x = newNodeRect.iTl.iX + 1;
+        }
+        else {
+            x = m_focusPosition.iX;
+        }
+    }
+    return TPoint(x, y);
+}
+
+int WebTabbedNavigation::distanceFunction(int horizontalDir, int verticalDir, TRect& rect, TPoint& point)
+{
+    TReal x, y, euclidianDistance;
+    int sameAxisDist, otherAxisDist, overlap;
+
+    Math::Pow(x, (m_focusPosition.iX - point.iX), 2.0);
+    Math::Pow(y, (m_focusPosition.iY - point.iY), 2.0);
+    Math::Sqrt(euclidianDistance, x + y);
+    sameAxisDist = horizontalDir * (point.iX - m_focusPosition.iX) + verticalDir * (point.iY - m_focusPosition.iY);
+    otherAxisDist = (horizontalDir) ? (point.iY - m_focusPosition.iY) : (point.iX - m_focusPosition.iX) ;
+    otherAxisDist = (otherAxisDist < 0 ) ? (otherAxisDist * -1) : otherAxisDist;
+    if (horizontalDir) { // horizontal
+        if (rect.iBr.iY < m_selectedElementRect.iTl.iY || rect.iTl.iY > m_selectedElementRect.iBr.iY) {
+            overlap = 0;
+        }
+        else {
+            int top = max(m_selectedElementRect.iTl.iY, rect.iTl.iY);
+            int bottom = std::min(m_selectedElementRect.iBr.iY, rect.iBr.iY);
+            overlap = bottom - top;
+        }
+    }
+    else { // vertical    
+        if (rect.iBr.iX < m_selectedElementRect.iTl.iX || rect.iTl.iX > m_selectedElementRect.iBr.iX) {
+            overlap = 0;
+        }
+        else {
+            int top = max(m_selectedElementRect.iTl.iX, rect.iTl.iX);
+            int bottom = std::min(m_selectedElementRect.iBr.iX, rect.iBr.iX);
+            overlap = bottom - top;
+        }
+    }
+    long ed, o;
+    Math::Int(ed, euclidianDistance);
+    Math::Int(o, sqrt(overlap));
+    return ed + sameAxisDist + 2 * otherAxisDist + o;
+}