third_party/WebKit/Source/core/layout/LayoutTextControlSingleLine.h

   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 LayoutTextControlSingleLine_h
  24 #define LayoutTextControlSingleLine_h
  25
  26 #include "core/html/HTMLInputElement.h"
  27 #include "core/layout/LayoutTextControl.h"
  28
  29 namespace blink {
  30
  31 class HTMLInputElement;
  32
  33 class LayoutTextControlSingleLine : public LayoutTextControl {
  34 public:
  35     LayoutTextControlSingleLine(HTMLInputElement*);
  36     ~LayoutTextControlSingleLine() override;
  37     // FIXME: Move createInnerEditorStyle() to TextControlInnerEditorElement.
  38     PassRefPtr<ComputedStyle> createInnerEditorStyle(const ComputedStyle& startStyle) const final;
  39
  40     void capsLockStateMayHaveChanged();
  41
  42 protected:
  43     virtual void centerContainerIfNeeded(LayoutBox*) const { }
  44     virtual LayoutUnit computeLogicalHeightLimit() const;
  45     Element* containerElement() const;
  46     Element* editingViewPortElement() const;
  47     HTMLInputElement* inputElement() const;
  48
  49 private:
  50     bool hasControlClip() const final;
  51     LayoutRect controlClipRect(const LayoutPoint&) const final;
  52     bool isOfType(LayoutObjectType type) const override { return type == LayoutObjectTextField || LayoutTextControl::isOfType(type); }
  53
  54     void paint(const PaintInfo&, const LayoutPoint&) override;
  55     void layout() override;
  56
  57     bool nodeAtPoint(HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) final;
  58
  59     void autoscroll(const IntPoint&) final;
  60
  61     // Subclassed to forward to our inner div.
  62     LayoutUnit scrollLeft() const final;
  63     LayoutUnit scrollTop() const final;
  64     LayoutUnit scrollWidth() const final;
  65     LayoutUnit scrollHeight() const final;
  66     void setScrollLeft(LayoutUnit) final;
  67     void setScrollTop(LayoutUnit) final;
  68
  69     int textBlockWidth() const;
  70     float getAvgCharWidth(const AtomicString& family) const final;
  71     LayoutUnit preferredContentLogicalWidth(float charWidth) const final;
  72     LayoutUnit computeControlLogicalHeight(LayoutUnit lineHeight, LayoutUnit nonContentHeight) const override;
  73
  74     void styleDidChange(StyleDifference, const ComputedStyle* oldStyle) final;
  75
  76     bool textShouldBeTruncated() const;
  77
  78     HTMLElement* innerSpinButtonElement() const;
  79
  80     bool m_shouldDrawCapsLockIndicator;
  81     LayoutUnit m_desiredInnerEditorLogicalHeight;
  82 };
  83
  84 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutTextControlSingleLine, isTextField());
  85
  86 // ----------------------------
  87
  88 class LayoutTextControlInnerBlock : public LayoutBlockFlow {
  89 public:
  90     LayoutTextControlInnerBlock(Element* element) : LayoutBlockFlow(element) { }
  91     int inlineBlockBaseline(LineDirectionMode direction) const override { return lastLineBoxBaseline(direction); }
  92
  93 private:
  94     bool isIntrinsicallyScrollable(ScrollbarOrientation orientation) const override
  95     {
  96         return orientation == HorizontalScrollbar;
  97     }
  98     bool scrollsOverflowX() const override { return hasOverflowClip(); }
  99     bool scrollsOverflowY() const override { return false; }
 100     bool hasLineIfEmpty() const override { return true; }
 101 };
 102
 103 }
 104
 105 #endif