| /* |
| * Copyright (C) 2006, 2007, 2012 Apple Inc. All rights reserved. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| * |
| */ |
| |
| #include "config.h" |
| #include "core/layout/LayoutFileUploadControl.h" |
| |
| #include "core/HTMLNames.h" |
| #include "core/InputTypeNames.h" |
| #include "core/dom/shadow/ElementShadow.h" |
| #include "core/dom/shadow/ShadowRoot.h" |
| #include "core/editing/PositionWithAffinity.h" |
| #include "core/fileapi/FileList.h" |
| #include "core/html/HTMLInputElement.h" |
| #include "core/layout/LayoutButton.h" |
| #include "core/layout/LayoutTheme.h" |
| #include "core/layout/TextRunConstructor.h" |
| #include "core/paint/FileUploadControlPainter.h" |
| #include "platform/fonts/Font.h" |
| #include "platform/text/PlatformLocale.h" |
| #include "platform/text/TextRun.h" |
| #include <math.h> |
| |
| namespace blink { |
| |
| using namespace HTMLNames; |
| |
| const int defaultWidthNumChars = 34; |
| |
| LayoutFileUploadControl::LayoutFileUploadControl(HTMLInputElement* input) |
| : LayoutBlockFlow(input) |
| , m_canReceiveDroppedFiles(input->canReceiveDroppedFiles()) |
| { |
| } |
| |
| LayoutFileUploadControl::~LayoutFileUploadControl() |
| { |
| } |
| |
| void LayoutFileUploadControl::updateFromElement() |
| { |
| HTMLInputElement* input = toHTMLInputElement(node()); |
| ASSERT(input->type() == InputTypeNames::file); |
| |
| if (HTMLInputElement* button = uploadButton()) { |
| bool newCanReceiveDroppedFilesState = input->canReceiveDroppedFiles(); |
| if (m_canReceiveDroppedFiles != newCanReceiveDroppedFilesState) { |
| m_canReceiveDroppedFiles = newCanReceiveDroppedFilesState; |
| button->setActive(newCanReceiveDroppedFilesState); |
| } |
| } |
| |
| // This only supports clearing out the files, but that's OK because for |
| // security reasons that's the only change the DOM is allowed to make. |
| FileList* files = input->files(); |
| ASSERT(files); |
| if (files && files->isEmpty()) |
| setShouldDoFullPaintInvalidation(); |
| } |
| |
| int LayoutFileUploadControl::maxFilenameWidth() const |
| { |
| int uploadButtonWidth = (uploadButton() && uploadButton()->layoutBox()) ? uploadButton()->layoutBox()->pixelSnappedWidth() : 0; |
| return std::max(0, contentBoxRect().pixelSnappedWidth() - uploadButtonWidth - afterButtonSpacing); |
| } |
| |
| void LayoutFileUploadControl::paintObject(const PaintInfo& paintInfo, const LayoutPoint& paintOffset) const |
| { |
| FileUploadControlPainter(*this).paintObject(paintInfo, paintOffset); |
| } |
| |
| void LayoutFileUploadControl::computeIntrinsicLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth) const |
| { |
| // Figure out how big the filename space needs to be for a given number of characters |
| // (using "0" as the nominal character). |
| const UChar character = '0'; |
| const String characterAsString = String(&character, 1); |
| const Font& font = style()->font(); |
| float minDefaultLabelWidth = defaultWidthNumChars * font.width(constructTextRun(font, characterAsString, styleRef(), TextRun::AllowTrailingExpansion)); |
| |
| const String label = toHTMLInputElement(node())->locale().queryString(WebLocalizedString::FileButtonNoFileSelectedLabel); |
| float defaultLabelWidth = font.width(constructTextRun(font, label, styleRef(), TextRun::AllowTrailingExpansion)); |
| if (HTMLInputElement* button = uploadButton()) { |
| if (LayoutObject* buttonLayoutObject = button->layoutObject()) |
| defaultLabelWidth += buttonLayoutObject->maxPreferredLogicalWidth() + afterButtonSpacing; |
| } |
| maxLogicalWidth = static_cast<int>(ceilf(std::max(minDefaultLabelWidth, defaultLabelWidth))); |
| |
| if (!style()->width().hasPercent()) |
| minLogicalWidth = maxLogicalWidth; |
| } |
| |
| void LayoutFileUploadControl::computePreferredLogicalWidths() |
| { |
| ASSERT(preferredLogicalWidthsDirty()); |
| |
| m_minPreferredLogicalWidth = 0; |
| m_maxPreferredLogicalWidth = 0; |
| const ComputedStyle& styleToUse = styleRef(); |
| |
| if (styleToUse.width().isFixed() && styleToUse.width().value() > 0) |
| m_minPreferredLogicalWidth = m_maxPreferredLogicalWidth = adjustContentBoxLogicalWidthForBoxSizing(styleToUse.width().value()); |
| else |
| computeIntrinsicLogicalWidths(m_minPreferredLogicalWidth, m_maxPreferredLogicalWidth); |
| |
| if (styleToUse.minWidth().isFixed() && styleToUse.minWidth().value() > 0) { |
| m_maxPreferredLogicalWidth = std::max(m_maxPreferredLogicalWidth, adjustContentBoxLogicalWidthForBoxSizing(styleToUse.minWidth().value())); |
| m_minPreferredLogicalWidth = std::max(m_minPreferredLogicalWidth, adjustContentBoxLogicalWidthForBoxSizing(styleToUse.minWidth().value())); |
| } |
| |
| if (styleToUse.maxWidth().isFixed()) { |
| m_maxPreferredLogicalWidth = std::min(m_maxPreferredLogicalWidth, adjustContentBoxLogicalWidthForBoxSizing(styleToUse.maxWidth().value())); |
| m_minPreferredLogicalWidth = std::min(m_minPreferredLogicalWidth, adjustContentBoxLogicalWidthForBoxSizing(styleToUse.maxWidth().value())); |
| } |
| |
| int toAdd = borderAndPaddingWidth(); |
| m_minPreferredLogicalWidth += toAdd; |
| m_maxPreferredLogicalWidth += toAdd; |
| |
| clearPreferredLogicalWidthsDirty(); |
| } |
| |
| PositionWithAffinity LayoutFileUploadControl::positionForPoint(const LayoutPoint&) |
| { |
| return PositionWithAffinity(); |
| } |
| |
| HTMLInputElement* LayoutFileUploadControl::uploadButton() const |
| { |
| // FIXME: This should be on HTMLInputElement as an API like innerButtonElement(). |
| HTMLInputElement* input = toHTMLInputElement(node()); |
| Node* buttonNode = input->userAgentShadowRoot()->firstChild(); |
| return isHTMLInputElement(buttonNode) ? toHTMLInputElement(buttonNode) : 0; |
| } |
| |
| String LayoutFileUploadControl::buttonValue() |
| { |
| if (HTMLInputElement* button = uploadButton()) |
| return button->value(); |
| |
| return String(); |
| } |
| |
| String LayoutFileUploadControl::fileTextValue() const |
| { |
| HTMLInputElement* input = toHTMLInputElement(node()); |
| ASSERT(input->files()); |
| return LayoutTheme::theme().fileListNameForWidth(input->locale(), input->files(), style()->font(), maxFilenameWidth()); |
| } |
| |
| } // namespace blink |