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/*
* Copyright 2007, The Android Open Source Project
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef CachedNode_H
#define CachedNode_H
#include "AtomicString.h"
#include "CachedDebug.h"
#include "CachedNodeType.h"
#include "IntRect.h"
#include "PlatformString.h"
#include "wtf/Vector.h"
class SkPicture;
namespace WebCore {
class Node;
}
namespace android {
class CachedFrame;
class CachedRoot;
class CachedNode {
public:
// Nodes are rejected because either they are spacially not the best (first set)
// or because they have the wrong DOM attribute (in focus, a focused child, etc)
// findClosest() gives only spacially rejected nodes a second chance
enum Condition { // if bigger than 32, increase bitfield size below
// rejections that get a second chance
NOT_REJECTED = 0,
SECOND_CHANCE_START = NOT_REJECTED, // must be first in list
BUTTED_UP,
CENTER_FURTHER,
CLOSER,
CLOSER_IN_CURSOR,
CLOSER_OVERLAP,
CLOSER_TOP,
NAVABLE,
FURTHER,
IN_UMBRA,
IN_WORKING,
LEFTMOST,
NOT_ENCLOSING_CURSOR,
OVERLAP_OR_EDGE_FURTHER,
PREFERRED, // better overlap measure
SECOND_CHANCE_END = PREFERRED, // must be last in list
// rejections that don't get a second chance
ANCHOR_IN_ANCHOR,
BEST_DIRECTION, // can be reached by another direction
CHILD,
DISABLED,
HIGHER_TAB_INDEX,
IN_CURSOR,
IN_CURSOR_CHILDREN,
NOT_CURSOR_NODE,
OUTSIDE_OF_BEST, // containership
OUTSIDE_OF_ORIGINAL, // containership
UNDER_LAYER,
CONDITION_SIZE // FIXME: test that CONDITION_SIZE fits in mCondition
};
CachedNode() {
// The node is initiaized to 0 in its array, so nothing to do in the
// constructor
}
WebCore::IntRect bounds(const CachedFrame* ) const;
int childFrameIndex() const { return isFrame() ? mDataIndex : -1; }
void clearCondition() const { mCondition = NOT_REJECTED; }
void clearCursor(CachedFrame* );
static bool Clip(const WebCore::IntRect& outer, WebCore::IntRect* inner,
WTF::Vector<WebCore::IntRect>* rings);
bool clip(const WebCore::IntRect& );
bool clippedOut() { return mClippedOut; }
WebCore::IntRect cursorRingBounds(const CachedFrame* ) const;
void cursorRings(const CachedFrame* , WTF::Vector<WebCore::IntRect>* ) const;
bool disabled() const { return mDisabled; }
const CachedNode* document() const { return &this[-mIndex]; }
void fixUpCursorRects(const CachedFrame* frame);
const WTF::String& getExport() const { return mExport; }
bool hasCursorRing() const { return mHasCursorRing; }
bool hasMouseOver() const { return mHasMouseOver; }
void hideCursor(CachedFrame* );
WebCore::IntRect hitBounds(const CachedFrame* ) const;
int index() const { return mIndex; }
void init(WebCore::Node* node);
bool isAnchor() const { return mType == ANCHOR_CACHEDNODETYPE; }
bool isContentEditable() const { return mType == CONTENT_EDITABLE_CACHEDNODETYPE; }
bool isCursor() const { return mIsCursor; }
bool isArea() const { return mType == AREA_CACHEDNODETYPE; }
bool isFocus() const { return mIsFocus; }
bool isFrame() const { return mType == FRAME_CACHEDNODETYPE; }
bool isHidden() const { return mIsHidden; }
bool isInLayer() const { return mIsInLayer; }
bool isNavable(const CachedFrame* frame, const WebCore::IntRect& clip) const {
return clip.intersects(bounds(frame));
}
bool isPlugin() const { return mType == PLUGIN_CACHEDNODETYPE; }
bool isSelect() const { return mType == SELECT_CACHEDNODETYPE; }
bool isSyntheticLink() const {
return mType >= ADDRESS_CACHEDNODETYPE && mType <= PHONE_CACHEDNODETYPE;
}
bool isTextField(const CachedFrame*) const;
bool isTextInput() const { return mType == TEXT_INPUT_CACHEDNODETYPE; }
bool isTransparent() const { return mIsTransparent; }
bool isUnclipped() const { return mIsUnclipped; }
// localXXX functions are used only for drawing cursor rings
WebCore::IntRect localBounds(const CachedFrame* ) const;
void localCursorRings(const CachedFrame* ,
WTF::Vector<WebCore::IntRect>* ) const;
WebCore::IntRect localHitBounds(const CachedFrame* ) const;
WebCore::IntRect localRing(const CachedFrame* , size_t part) const;
void move(int x, int y);
int navableRects() const { return mNavableRects; }
void* nodePointer() const { return mNode; }
bool noSecondChance() const { return mCondition > SECOND_CHANCE_END; }
const WebCore::IntRect& originalAbsoluteBounds() const {
return mOriginalAbsoluteBounds; }
const CachedNode* parent() const { return document() + mParentIndex; }
void* parentGroup() const { return mParentGroup; }
int parentIndex() const { return mParentIndex; }
bool partRectsContains(const CachedNode* other) const;
void reset();
WebCore::IntRect ring(const CachedFrame* , size_t part) const;
void setBounds(const WebCore::IntRect& bounds) { mBounds = bounds; }
void setClippedOut(bool clipped) { mClippedOut = clipped; }
void setCondition(Condition condition) const { mCondition = condition; }
void setDataIndex(int index) { mDataIndex = index; }
void setDisabled(bool disabled) { mDisabled = disabled; }
void setExport(const WTF::String& exported) { mExport = exported; }
void setHasCursorRing(bool hasRing) { mHasCursorRing = hasRing; }
void setHasMouseOver(bool hasMouseOver) { mHasMouseOver = hasMouseOver; }
void setHitBounds(const WebCore::IntRect& bounds) { mHitBounds = bounds; }
void setOriginalAbsoluteBounds(const WebCore::IntRect& bounds) {
mOriginalAbsoluteBounds = bounds; }
void setIndex(int index) { mIndex = index; }
void setIsCursor(bool isCursor) { mIsCursor = isCursor; }
void setIsFocus(bool isFocus) { mIsFocus = isFocus; }
void setIsInLayer(bool isInLayer) { mIsInLayer = isInLayer; }
void setIsParentAnchor(bool isAnchor) { mIsParentAnchor = isAnchor; }
void setIsTransparent(bool isTransparent) { mIsTransparent = isTransparent; }
void setIsUnclipped(bool unclipped) { mIsUnclipped = unclipped; }
void setLast() { mLast = true; }
void setNavableRects() { mNavableRects = mCursorRing.size(); }
void setParentGroup(void* group) { mParentGroup = group; }
void setParentIndex(int parent) { mParentIndex = parent; }
void setTabIndex(int index) { mTabIndex = index; }
void setType(CachedNodeType type) { mType = type; }
void show() { mIsHidden = false; }
int tabIndex() const { return mTabIndex; }
int textInputIndex() const { return isTextInput() ? mDataIndex : -1; }
const CachedNode* traverseNextNode() const { return mLast ? NULL : &this[1]; }
bool useBounds() const { return mUseBounds; }
bool useHitBounds() const { return mUseHitBounds; }
bool wantsKeyEvents() const { return isTextInput() || isPlugin() || isContentEditable(); }
private:
friend class CacheBuilder;
WTF::String mExport;
WebCore::IntRect mBounds;
WebCore::IntRect mHitBounds;
WebCore::IntRect mOriginalAbsoluteBounds;
WTF::Vector<WebCore::IntRect> mCursorRing;
void* mNode; // WebCore::Node*, only used to match pointers
void* mParentGroup; // WebCore::Node*, only used to match pointers
int mDataIndex; // child frame if a frame; input data index; or -1
int mIndex; // index of itself, to find first in array (document)
int mNavableRects; // FIXME: could be bitfield once I limit max number of rects
int mParentIndex;
int mTabIndex;
mutable Condition mCondition : 5; // why the node was not chosen on the first pass
CachedNodeType mType : 4;
bool mClippedOut : 1;
bool mDisabled : 1;
bool mFixedUpCursorRects : 1;
bool mHasCursorRing : 1;
bool mHasMouseOver : 1;
bool mIsCursor : 1;
bool mIsFocus : 1;
bool mIsHidden : 1;
bool mIsInLayer : 1;
bool mIsParentAnchor : 1;
bool mIsTransparent : 1;
bool mIsUnclipped : 1;
bool mLast : 1; // true if this is the last node in a group
bool mUseBounds : 1;
bool mUseHitBounds : 1;
#ifdef BROWSER_DEBUG
public:
WebCore::Node* webCoreNode() const { return (WebCore::Node*) mNode; }
bool mDisplayMeasure;
mutable bool mInCompare;
int mSideDistance;
int mSecondSide;
#endif
#if DEBUG_NAV_UI || DUMP_NAV_CACHE
public:
class Debug {
public:
CachedNode* base() const;
const char* condition(Condition t) const;
void print() const;
const char* type(CachedNodeType t) const;
#if DUMP_NAV_CACHE
int mNodeIndex;
int mParentGroupIndex;
#endif
} mDebug;
friend class CachedNode::Debug;
#endif
};
}
#endif
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