| /* |
| * Copyright (C) 2006, 2008, 2010 Apple Inc. All rights reserved. |
| * Copyright (C) 2010 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "SpinButtonElement.h" |
| |
| #include "Chrome.h" |
| #include "EventHandler.h" |
| #include "EventNames.h" |
| #include "Frame.h" |
| #include "HTMLNames.h" |
| #include "MouseEvent.h" |
| #include "Page.h" |
| #include "RenderBox.h" |
| #include "RenderTheme.h" |
| #include "ScrollbarTheme.h" |
| #include "ShadowPseudoIds.h" |
| #include "WheelEvent.h" |
| #include <wtf/IsoMallocInlines.h> |
| #include <wtf/Ref.h> |
| |
| namespace WebCore { |
| |
| WTF_MAKE_ISO_ALLOCATED_IMPL(SpinButtonElement); |
| |
| using namespace HTMLNames; |
| |
| inline SpinButtonElement::SpinButtonElement(Document& document, SpinButtonOwner& spinButtonOwner) |
| : HTMLDivElement(divTag, document) |
| , m_spinButtonOwner(&spinButtonOwner) |
| , m_capturing(false) |
| , m_upDownState(Indeterminate) |
| , m_pressStartingState(Indeterminate) |
| , m_repeatingTimer(*this, &SpinButtonElement::repeatingTimerFired) |
| { |
| setHasCustomStyleResolveCallbacks(); |
| } |
| |
| Ref<SpinButtonElement> SpinButtonElement::create(Document& document, SpinButtonOwner& spinButtonOwner) |
| { |
| auto element = adoptRef(*new SpinButtonElement(document, spinButtonOwner)); |
| element->setPseudo(ShadowPseudoIds::webkitInnerSpinButton()); |
| return element; |
| } |
| |
| void SpinButtonElement::willDetachRenderers() |
| { |
| releaseCapture(); |
| } |
| |
| void SpinButtonElement::defaultEventHandler(Event& event) |
| { |
| if (!is<MouseEvent>(event)) { |
| if (!event.defaultHandled()) |
| HTMLDivElement::defaultEventHandler(event); |
| return; |
| } |
| |
| RenderBox* box = renderBox(); |
| if (!box) { |
| if (!event.defaultHandled()) |
| HTMLDivElement::defaultEventHandler(event); |
| return; |
| } |
| |
| if (!shouldRespondToMouseEvents()) { |
| if (!event.defaultHandled()) |
| HTMLDivElement::defaultEventHandler(event); |
| return; |
| } |
| |
| MouseEvent& mouseEvent = downcast<MouseEvent>(event); |
| IntPoint local = roundedIntPoint(box->absoluteToLocal(mouseEvent.absoluteLocation(), UseTransforms)); |
| if (mouseEvent.type() == eventNames().mousedownEvent && mouseEvent.button() == LeftButton) { |
| if (box->borderBoxRect().contains(local)) { |
| // The following functions of HTMLInputElement may run JavaScript |
| // code which detaches this shadow node. We need to take a reference |
| // and check renderer() after such function calls. |
| Ref<SpinButtonElement> protectedThis(*this); |
| if (m_spinButtonOwner) |
| m_spinButtonOwner->focusAndSelectSpinButtonOwner(); |
| if (renderer()) { |
| if (m_upDownState != Indeterminate) { |
| // A JavaScript event handler called in doStepAction() below |
| // might change the element state and we might need to |
| // cancel the repeating timer by the state change. If we |
| // started the timer after doStepAction(), we would have no |
| // chance to cancel the timer. |
| startRepeatingTimer(); |
| doStepAction(m_upDownState == Up ? 1 : -1); |
| } |
| } |
| mouseEvent.setDefaultHandled(); |
| } |
| } else if (mouseEvent.type() == eventNames().mouseupEvent && mouseEvent.button() == LeftButton) |
| stopRepeatingTimer(); |
| else if (mouseEvent.type() == eventNames().mousemoveEvent) { |
| if (box->borderBoxRect().contains(local)) { |
| if (!m_capturing) { |
| if (RefPtr<Frame> frame = document().frame()) { |
| frame->eventHandler().setCapturingMouseEventsElement(this); |
| m_capturing = true; |
| if (Page* page = document().page()) |
| page->chrome().registerPopupOpeningObserver(*this); |
| } |
| } |
| UpDownState oldUpDownState = m_upDownState; |
| switch (renderer()->theme().innerSpinButtonLayout(*renderer())) { |
| case RenderTheme::InnerSpinButtonLayout::Vertical: |
| m_upDownState = local.y() < box->height() / 2 ? Up : Down; |
| break; |
| case RenderTheme::InnerSpinButtonLayout::HorizontalUpLeft: |
| m_upDownState = local.x() < box->width() / 2 ? Up : Down; |
| break; |
| case RenderTheme::InnerSpinButtonLayout::HorizontalUpRight: |
| m_upDownState = local.x() > box->width() / 2 ? Up : Down; |
| break; |
| } |
| if (m_upDownState != oldUpDownState) |
| renderer()->repaint(); |
| } else { |
| releaseCapture(); |
| m_upDownState = Indeterminate; |
| } |
| } |
| |
| if (!mouseEvent.defaultHandled()) |
| HTMLDivElement::defaultEventHandler(mouseEvent); |
| } |
| |
| void SpinButtonElement::willOpenPopup() |
| { |
| releaseCapture(); |
| m_upDownState = Indeterminate; |
| } |
| |
| void SpinButtonElement::forwardEvent(Event& event) |
| { |
| if (!is<WheelEvent>(event)) |
| return; |
| |
| if (!m_spinButtonOwner) |
| return; |
| |
| if (!m_spinButtonOwner->shouldSpinButtonRespondToWheelEvents()) |
| return; |
| |
| doStepAction(downcast<WheelEvent>(event).wheelDeltaY()); |
| event.setDefaultHandled(); |
| } |
| |
| bool SpinButtonElement::willRespondToMouseMoveEvents() |
| { |
| if (renderBox() && shouldRespondToMouseEvents()) |
| return true; |
| |
| return HTMLDivElement::willRespondToMouseMoveEvents(); |
| } |
| |
| bool SpinButtonElement::willRespondToMouseClickEvents() |
| { |
| if (renderBox() && shouldRespondToMouseEvents()) |
| return true; |
| |
| return HTMLDivElement::willRespondToMouseClickEvents(); |
| } |
| |
| void SpinButtonElement::doStepAction(int amount) |
| { |
| if (!m_spinButtonOwner) |
| return; |
| |
| if (amount > 0) |
| m_spinButtonOwner->spinButtonStepUp(); |
| else if (amount < 0) |
| m_spinButtonOwner->spinButtonStepDown(); |
| } |
| |
| void SpinButtonElement::releaseCapture() |
| { |
| stopRepeatingTimer(); |
| if (m_capturing) { |
| if (RefPtr<Frame> frame = document().frame()) { |
| frame->eventHandler().setCapturingMouseEventsElement(nullptr); |
| m_capturing = false; |
| if (Page* page = document().page()) |
| page->chrome().unregisterPopupOpeningObserver(*this); |
| } |
| } |
| } |
| |
| bool SpinButtonElement::matchesReadWritePseudoClass() const |
| { |
| return shadowHost()->matchesReadWritePseudoClass(); |
| } |
| |
| void SpinButtonElement::startRepeatingTimer() |
| { |
| m_pressStartingState = m_upDownState; |
| ScrollbarTheme& theme = ScrollbarTheme::theme(); |
| m_repeatingTimer.start(theme.initialAutoscrollTimerDelay(), theme.autoscrollTimerDelay()); |
| } |
| |
| void SpinButtonElement::stopRepeatingTimer() |
| { |
| m_repeatingTimer.stop(); |
| } |
| |
| void SpinButtonElement::step(int amount) |
| { |
| if (!shouldRespondToMouseEvents()) |
| return; |
| // On Mac OS, NSStepper updates the value for the button under the mouse |
| // cursor regardless of the button pressed at the beginning. So the |
| // following check is not needed for Mac OS. |
| #if !OS(MAC_OS_X) |
| if (m_upDownState != m_pressStartingState) |
| return; |
| #endif |
| doStepAction(amount); |
| } |
| |
| void SpinButtonElement::repeatingTimerFired() |
| { |
| if (m_upDownState != Indeterminate) |
| step(m_upDownState == Up ? 1 : -1); |
| } |
| |
| void SpinButtonElement::setHovered(bool flag, Style::InvalidationScope invalidationScope) |
| { |
| if (!flag) |
| m_upDownState = Indeterminate; |
| HTMLDivElement::setHovered(flag, invalidationScope); |
| } |
| |
| bool SpinButtonElement::shouldRespondToMouseEvents() |
| { |
| return !m_spinButtonOwner || m_spinButtonOwner->shouldSpinButtonRespondToMouseEvents(); |
| } |
| |
| } |
