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-rw-r--r--WebKit/android/nav/CachedHistory.h90
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diff --git a/WebKit/android/nav/CachedHistory.h b/WebKit/android/nav/CachedHistory.h
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--- a/WebKit/android/nav/CachedHistory.h
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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 APPLE COMPUTER, INC. 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 CachedHistory_H
-#define CachedHistory_H
-
-#include "CachedFrame.h"
-
-#define NAVIGATION_VISIT_DEPTH 8 // the number of nodes last visited -- used to detect ping-ponging (number should be tuned)
-
-namespace android {
-
-class CachedRoot;
-
-// CachedHistory is maintained even if DOM is rebuilt by running script.
-// It uses blind pointers for comparison in the previously visited nodes.
-class CachedHistory {
-public:
- CachedHistory();
- void addToVisited(const CachedNode* , CachedFrame::Direction );
- bool checkVisited(const CachedNode* , CachedFrame::Direction ) const;
- bool didFirstLayout() const { return mDidFirstLayout; }
- bool directionChange() const { return mDirectionChange; }
- int minWorkingHorizontal() const { return mMinWorkingHorizontal; }
- int minWorkingVertical() const { return mMinWorkingVertical; }
- int maxWorkingHorizontal() const { return mMaxWorkingHorizontal; }
- int maxWorkingVertical() const { return mMaxWorkingVertical; }
- const WebCore::IntRect& navBounds() const { return mNavBounds; }
- const WebCore::IntRect& priorBounds() const { return mPriorBounds; }
- void setDidFirstLayout(bool did) { mDidFirstLayout = did; }
- void setNavBounds(const WebCore::IntRect& loc) { mNavBounds = loc; }
- void setWorking(CachedFrame::Direction , const CachedNode* focus,
- const WebCore::IntRect& viewBounds);
- void reset();
-private:
- void pinMaxMin(const WebCore::IntRect& viewBounds);
- struct Visited {
- const CachedNode* mNode;
- CachedFrame::Direction mDirection;
- } mVisited[NAVIGATION_VISIT_DEPTH];
- WebCore::IntRect mMouseBounds; // constricted bounds, if focus ring is partially visible
- WebCore::IntRect mNavBounds; // focus ring bounds plus optional keystroke movement
- WebCore::IntRect mPriorBounds; // prior chosen focus ring (for reversing narrowing)
- bool mDirectionChange;
- bool mFocusIsInput; // defer max/min to non-focus node if focus is too broad
- bool mPriorIsInput; // defer max/min to non-focus node if focus is too broad
- bool mDidFirstLayout; // set true when page is newly laid out
- CachedFrame::Direction mLastMove;
- CachedFrame::Direction mPriorMove;
- int mMinWorkingHorizontal;
- int mMaxWorkingHorizontal;
- int mMinWorkingVertical;
- int mMaxWorkingVertical;
- friend class CachedRoot;
-#if DUMP_NAV_CACHE
-public:
- class Debug {
-public:
- CachedHistory* base() const;
- const char* direction(CachedFrame::Direction d) const;
- void print(CachedRoot* ) const;
- } mDebug;
-#endif
-};
-
-}
-
-#endif