/*
* 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;
}