1 | /* |
2 | * Copyright (C) 2006, 2007 Apple Inc. All rights reserved. |
3 | * (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/) |
4 | * |
5 | * This library is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU Library General Public |
7 | * License as published by the Free Software Foundation; either |
8 | * version 2 of the License, or (at your option) any later version. |
9 | * |
10 | * This library is distributed in the hope that it will be useful, |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | * Library General Public License for more details. |
14 | * |
15 | * You should have received a copy of the GNU Library General Public License |
16 | * along with this library; see the file COPYING.LIB. If not, write to |
17 | * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
18 | * Boston, MA 02110-1301, USA. |
19 | * |
20 | */ |
21 | |
22 | #pragma once |
23 | |
24 | #include "RenderBlockFlow.h" |
25 | #include "RenderFlexibleBox.h" |
26 | |
27 | namespace WebCore { |
28 | |
29 | class TextControlInnerTextElement; |
30 | class HTMLTextFormControlElement; |
31 | |
32 | class RenderTextControl : public RenderBlockFlow { |
33 | WTF_MAKE_ISO_ALLOCATED(RenderTextControl); |
34 | public: |
35 | virtual ~RenderTextControl(); |
36 | |
37 | WEBCORE_EXPORT HTMLTextFormControlElement& textFormControlElement() const; |
38 | |
39 | #if PLATFORM(IOS_FAMILY) |
40 | bool canScroll() const; |
41 | |
42 | // Returns the line height of the inner renderer. |
43 | int innerLineHeight() const override; |
44 | #endif |
45 | |
46 | protected: |
47 | RenderTextControl(HTMLTextFormControlElement&, RenderStyle&&); |
48 | |
49 | // This convenience function should not be made public because innerTextElement may outlive the render tree. |
50 | RefPtr<TextControlInnerTextElement> innerTextElement() const; |
51 | |
52 | int scrollbarThickness() const; |
53 | |
54 | void styleDidChange(StyleDifference, const RenderStyle* oldStyle) override; |
55 | |
56 | void hitInnerTextElement(HitTestResult&, const LayoutPoint& pointInContainer, const LayoutPoint& accumulatedOffset); |
57 | |
58 | int textBlockLogicalWidth() const; |
59 | int textBlockLogicalHeight() const; |
60 | |
61 | float scaleEmToUnits(int x) const; |
62 | |
63 | virtual float getAverageCharWidth(); |
64 | virtual LayoutUnit preferredContentLogicalWidth(float charWidth) const = 0; |
65 | virtual LayoutUnit computeControlLogicalHeight(LayoutUnit lineHeight, LayoutUnit nonContentHeight) const = 0; |
66 | |
67 | LogicalExtentComputedValues computeLogicalHeight(LayoutUnit logicalHeight, LayoutUnit logicalTop) const override; |
68 | void layoutExcludedChildren(bool relayoutChildren) override; |
69 | |
70 | private: |
71 | void element() const = delete; |
72 | |
73 | const char* renderName() const override { return "RenderTextControl" ; } |
74 | bool isTextControl() const final { return true; } |
75 | void computeIntrinsicLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth) const override; |
76 | void computePreferredLogicalWidths() override; |
77 | bool avoidsFloats() const override { return true; } |
78 | bool canHaveGeneratedChildren() const override { return false; } |
79 | |
80 | void addFocusRingRects(Vector<LayoutRect>&, const LayoutPoint& additionalOffset, const RenderLayerModelObject* paintContainer = 0) override; |
81 | |
82 | bool canBeProgramaticallyScrolled() const override { return true; } |
83 | }; |
84 | |
85 | // Renderer for our inner container, for <search> and others. |
86 | // We can't use RenderFlexibleBox directly, because flexboxes have a different |
87 | // baseline definition, and then inputs of different types wouldn't line up |
88 | // anymore. |
89 | class RenderTextControlInnerContainer final : public RenderFlexibleBox { |
90 | WTF_MAKE_ISO_ALLOCATED(RenderTextControlInnerContainer); |
91 | public: |
92 | explicit RenderTextControlInnerContainer(Element& element, RenderStyle&& style) |
93 | : RenderFlexibleBox(element, WTFMove(style)) |
94 | { } |
95 | virtual ~RenderTextControlInnerContainer() = default; |
96 | |
97 | int baselinePosition(FontBaseline baseline, bool firstLine, LineDirectionMode direction, LinePositionMode position) const override |
98 | { |
99 | return RenderBlock::baselinePosition(baseline, firstLine, direction, position); |
100 | } |
101 | Optional<int> firstLineBaseline() const override { return RenderBlock::firstLineBaseline(); } |
102 | Optional<int> inlineBlockBaseline(LineDirectionMode direction) const override { return RenderBlock::inlineBlockBaseline(direction); } |
103 | |
104 | private: |
105 | bool isFlexibleBoxImpl() const override { return true; } |
106 | }; |
107 | |
108 | } // namespace WebCore |
109 | |
110 | SPECIALIZE_TYPE_TRAITS_RENDER_OBJECT(RenderTextControl, isTextControl()) |
111 | |