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      1 /*
      2  * Copyright (C) 2006, 2007, 2009 Apple Inc. All rights reserved.
      3  * Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
      4  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
      5  *
      6  * This library is free software; you can redistribute it and/or
      7  * modify it under the terms of the GNU Library General Public
      8  * License as published by the Free Software Foundation; either
      9  * version 2 of the License, or (at your option) any later version.
     10  *
     11  * This library is distributed in the hope that it will be useful,
     12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     14  * Library General Public License for more details.
     15  *
     16  * You should have received a copy of the GNU Library General Public License
     17  * along with this library; see the file COPYING.LIB.  If not, write to
     18  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     19  * Boston, MA 02110-1301, USA.
     20  *
     21  */
     22 
     23 #ifndef RenderTextControlSingleLine_h
     24 #define RenderTextControlSingleLine_h
     25 
     26 #include "core/html/HTMLInputElement.h"
     27 #include "core/rendering/RenderTextControl.h"
     28 
     29 namespace WebCore {
     30 
     31 class HTMLInputElement;
     32 
     33 class RenderTextControlSingleLine : public RenderTextControl {
     34 public:
     35     RenderTextControlSingleLine(HTMLInputElement*);
     36     virtual ~RenderTextControlSingleLine();
     37     // FIXME: Move createInnerEditorStyle() to TextControlInnerEditorElement.
     38     virtual PassRefPtr<RenderStyle> createInnerEditorStyle(const RenderStyle* startStyle) const OVERRIDE FINAL;
     39 
     40     void capsLockStateMayHaveChanged();
     41 
     42 protected:
     43     virtual void centerContainerIfNeeded(RenderBox*) const { }
     44     virtual LayoutUnit computeLogicalHeightLimit() const;
     45     Element* containerElement() const;
     46     Element* editingViewPortElement() const;
     47     HTMLInputElement* inputElement() const;
     48 
     49 private:
     50     virtual bool hasControlClip() const OVERRIDE FINAL;
     51     virtual LayoutRect controlClipRect(const LayoutPoint&) const OVERRIDE FINAL;
     52     virtual bool isTextField() const OVERRIDE FINAL { return true; }
     53 
     54     virtual void paint(PaintInfo&, const LayoutPoint&) OVERRIDE;
     55     virtual void layout() OVERRIDE;
     56 
     57     virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) OVERRIDE FINAL;
     58 
     59     virtual void autoscroll(const IntPoint&) OVERRIDE FINAL;
     60 
     61     // Subclassed to forward to our inner div.
     62     virtual LayoutUnit scrollLeft() const OVERRIDE FINAL;
     63     virtual LayoutUnit scrollTop() const OVERRIDE FINAL;
     64     virtual LayoutUnit scrollWidth() const OVERRIDE FINAL;
     65     virtual LayoutUnit scrollHeight() const OVERRIDE FINAL;
     66     virtual void setScrollLeft(LayoutUnit) OVERRIDE FINAL;
     67     virtual void setScrollTop(LayoutUnit) OVERRIDE FINAL;
     68 
     69     int textBlockWidth() const;
     70     virtual float getAvgCharWidth(AtomicString family) OVERRIDE FINAL;
     71     virtual LayoutUnit preferredContentLogicalWidth(float charWidth) const OVERRIDE FINAL;
     72     virtual LayoutUnit computeControlLogicalHeight(LayoutUnit lineHeight, LayoutUnit nonContentHeight) const OVERRIDE;
     73 
     74     virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle) OVERRIDE FINAL;
     75 
     76     bool textShouldBeTruncated() const;
     77 
     78     HTMLElement* innerSpinButtonElement() const;
     79 
     80     bool m_shouldDrawCapsLockIndicator;
     81     LayoutUnit m_desiredInnerEditorLogicalHeight;
     82 };
     83 
     84 DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderTextControlSingleLine, isTextField());
     85 
     86 // ----------------------------
     87 
     88 class RenderTextControlInnerBlock : public RenderBlockFlow {
     89 public:
     90     RenderTextControlInnerBlock(Element* element) : RenderBlockFlow(element) { }
     91     virtual int inlineBlockBaseline(LineDirectionMode direction) const OVERRIDE { return lastLineBoxBaseline(direction); }
     92 
     93 private:
     94     virtual bool isIntristicallyScrollable(ScrollbarOrientation orientation) const OVERRIDE
     95     {
     96         return orientation == HorizontalScrollbar;
     97     }
     98     virtual bool scrollsOverflowX() const OVERRIDE { return hasOverflowClip(); }
     99     virtual bool scrollsOverflowY() const OVERRIDE { return false; }
    100     virtual bool hasLineIfEmpty() const OVERRIDE { return true; }
    101 };
    102 
    103 }
    104 
    105 #endif
    106