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

   1 /*
   2  * Copyright (C) 2006, 2007, 2009, 2012 Apple Inc. All rights reserved.
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public License
  15  * along with this library; see the file COPYING.LIB.  If not, write to
  16  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  17  * Boston, MA 02110-1301, USA.
  18  *
  19  */
  20
  21 #ifndef LayoutFileUploadControl_h
  22 #define LayoutFileUploadControl_h
  23
  24 #include "core/CoreExport.h"
  25 #include "core/layout/LayoutBlockFlow.h"
  26
  27 namespace blink {
  28
  29 class HTMLInputElement;
  30
  31 // Each LayoutFileUploadControl contains a LayoutButton (for opening the file chooser), and
  32 // sufficient space to draw a file icon and filename. The LayoutButton has a shadow node
  33 // associated with it to receive click/hover events.
  34
  35 class CORE_EXPORT LayoutFileUploadControl final : public LayoutBlockFlow {
  36 public:
  37     LayoutFileUploadControl(HTMLInputElement*);
  38     ~LayoutFileUploadControl() override;
  39
  40     bool isOfType(LayoutObjectType type) const override { return type == LayoutObjectFileUploadControl || LayoutBlockFlow::isOfType(type); }
  41
  42     String buttonValue();
  43     String fileTextValue() const;
  44
  45     HTMLInputElement* uploadButton() const;
  46     int uploadButtonWidth();
  47
  48     static const int afterButtonSpacing = 4;
  49
  50     const char* name() const override { return "LayoutFileUploadControl"; }
  51
  52 private:
  53     void updateFromElement() override;
  54     void computeIntrinsicLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth) const override;
  55     void computePreferredLogicalWidths() override;
  56     void paintObject(const PaintInfo&, const LayoutPoint&) override;
  57
  58     int maxFilenameWidth() const;
  59
  60     PositionWithAffinity positionForPoint(const LayoutPoint&) override;
  61
  62     bool m_canReceiveDroppedFiles;
  63 };
  64
  65 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutFileUploadControl, isFileUploadControl());
  66
  67 } // namespace blink
  68
  69 #endif // LayoutFileUploadControl_h