| /* |
| * 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: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * 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. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "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 THE COPYRIGHT |
| * OWNER 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 "web/ExternalPopupMenu.h" |
| |
| #include "core/dom/ExecutionContextTask.h" |
| #include "core/dom/NodeComputedStyle.h" |
| #include "core/frame/FrameHost.h" |
| #include "core/frame/FrameView.h" |
| #include "core/frame/LocalFrame.h" |
| #include "core/html/HTMLOptionElement.h" |
| #include "core/html/HTMLSelectElement.h" |
| #include "core/layout/LayoutBox.h" |
| #include "core/page/Page.h" |
| #include "core/style/ComputedStyle.h" |
| #include "platform/geometry/FloatQuad.h" |
| #include "platform/geometry/IntPoint.h" |
| #include "platform/text/TextDirection.h" |
| #include "public/platform/WebVector.h" |
| #include "public/web/WebExternalPopupMenu.h" |
| #include "public/web/WebFrameClient.h" |
| #include "public/web/WebMenuItemInfo.h" |
| #include "public/web/WebPopupMenuInfo.h" |
| #include "web/WebLocalFrameImpl.h" |
| #include "web/WebViewImpl.h" |
| #include "wtf/PtrUtil.h" |
| |
| namespace blink { |
| |
| ExternalPopupMenu::ExternalPopupMenu(LocalFrame& frame, HTMLSelectElement& ownerElement, WebViewImpl& webView) |
| : m_ownerElement(ownerElement) |
| , m_localFrame(frame) |
| , m_webView(webView) |
| , m_dispatchEventTimer(this, &ExternalPopupMenu::dispatchEvent) |
| , m_webExternalPopupMenu(0) |
| { |
| } |
| |
| ExternalPopupMenu::~ExternalPopupMenu() |
| { |
| } |
| |
| DEFINE_TRACE(ExternalPopupMenu) |
| { |
| visitor->trace(m_ownerElement); |
| visitor->trace(m_localFrame); |
| PopupMenu::trace(visitor); |
| } |
| |
| bool ExternalPopupMenu::showInternal() |
| { |
| // Blink core reuses the PopupMenu of an element. For simplicity, we do |
| // recreate the actual external popup everytime. |
| if (m_webExternalPopupMenu) { |
| m_webExternalPopupMenu->close(); |
| m_webExternalPopupMenu = 0; |
| } |
| |
| WebPopupMenuInfo info; |
| getPopupMenuInfo(info, *m_ownerElement); |
| if (info.items.isEmpty()) |
| return false; |
| WebLocalFrameImpl* webframe = WebLocalFrameImpl::fromFrame(m_localFrame.get()); |
| m_webExternalPopupMenu = webframe->client()->createExternalPopupMenu(info, this); |
| if (m_webExternalPopupMenu) { |
| LayoutObject* layoutObject = m_ownerElement->layoutObject(); |
| if (!layoutObject || !layoutObject->isBox()) |
| return false; |
| FloatQuad quad(toLayoutBox(layoutObject)->localToAbsoluteQuad(FloatQuad(toLayoutBox(layoutObject)->borderBoundingBox()))); |
| IntRect rect(quad.enclosingBoundingBox()); |
| IntRect rectInViewport = m_localFrame->view()->soonToBeRemovedContentsToUnscaledViewport(rect); |
| m_webExternalPopupMenu->show(rectInViewport); |
| return true; |
| } else { |
| // The client might refuse to create a popup (when there is already one pending to be shown for example). |
| didCancel(); |
| return false; |
| } |
| } |
| |
| void ExternalPopupMenu::show() |
| { |
| if (!showInternal()) |
| return; |
| #if OS(MACOSX) |
| const WebInputEvent* currentEvent = WebViewImpl::currentInputEvent(); |
| if (currentEvent && currentEvent->type == WebInputEvent::MouseDown) { |
| m_syntheticEvent = wrapUnique(new WebMouseEvent); |
| *m_syntheticEvent = *static_cast<const WebMouseEvent*>(currentEvent); |
| m_syntheticEvent->type = WebInputEvent::MouseUp; |
| m_dispatchEventTimer.startOneShot(0, BLINK_FROM_HERE); |
| // FIXME: show() is asynchronous. If preparing a popup is slow and a |
| // user released the mouse button before showing the popup, mouseup and |
| // click events are correctly dispatched. Dispatching the synthetic |
| // mouseup event is redundant in this case. |
| } |
| #endif |
| } |
| |
| void ExternalPopupMenu::dispatchEvent(Timer<ExternalPopupMenu>*) |
| { |
| m_webView.handleInputEvent(*m_syntheticEvent); |
| m_syntheticEvent.reset(); |
| } |
| |
| void ExternalPopupMenu::hide() |
| { |
| if (m_ownerElement) |
| m_ownerElement->popupDidHide(); |
| if (!m_webExternalPopupMenu) |
| return; |
| m_webExternalPopupMenu->close(); |
| m_webExternalPopupMenu = 0; |
| } |
| |
| void ExternalPopupMenu::updateFromElement(UpdateReason reason) |
| { |
| switch (reason) { |
| case BySelectionChange: |
| case ByDOMChange: |
| if (m_needsUpdate) |
| return; |
| m_needsUpdate = true; |
| m_ownerElement->document().postTask(BLINK_FROM_HERE, createSameThreadTask(&ExternalPopupMenu::update, wrapPersistent(this))); |
| break; |
| |
| case ByStyleChange: |
| // TOOD(tkent): We should update the popup location/content in some |
| // cases. e.g. Updating ComputedStyle of the SELECT element affects |
| // popup position and OPTION style. |
| break; |
| } |
| } |
| |
| void ExternalPopupMenu::update() |
| { |
| if (!m_webExternalPopupMenu || !m_ownerElement) |
| return; |
| m_ownerElement->document().updateStyleAndLayoutTree(); |
| // disconnectClient() might have been called. |
| if (!m_ownerElement) |
| return; |
| m_needsUpdate = false; |
| |
| if (showInternal()) |
| return; |
| // We failed to show a popup. Notify it to the owner. |
| hide(); |
| } |
| |
| void ExternalPopupMenu::disconnectClient() |
| { |
| hide(); |
| m_ownerElement = nullptr; |
| } |
| |
| void ExternalPopupMenu::didChangeSelection(int index) |
| { |
| } |
| |
| void ExternalPopupMenu::didAcceptIndex(int index) |
| { |
| // Calling methods on the HTMLSelectElement might lead to this object being |
| // derefed. This ensures it does not get deleted while we are running this |
| // method. |
| int popupMenuItemIndex = toPopupMenuItemIndex(index, *m_ownerElement); |
| |
| if (m_ownerElement) { |
| m_ownerElement->popupDidHide(); |
| m_ownerElement->valueChanged(popupMenuItemIndex); |
| } |
| m_webExternalPopupMenu = 0; |
| } |
| |
| void ExternalPopupMenu::didAcceptIndices(const WebVector<int>& indices) |
| { |
| if (!m_ownerElement) { |
| m_webExternalPopupMenu = 0; |
| return; |
| } |
| |
| HTMLSelectElement* ownerElement = m_ownerElement; |
| ownerElement->popupDidHide(); |
| |
| if (indices.size() == 0) { |
| ownerElement->valueChanged(static_cast<unsigned>(-1)); |
| } else { |
| for (size_t i = 0; i < indices.size(); ++i) |
| ownerElement->listBoxSelectItem(toPopupMenuItemIndex(indices[i], *ownerElement), (i > 0), false, (i == indices.size() - 1)); |
| } |
| |
| m_webExternalPopupMenu = 0; |
| } |
| |
| void ExternalPopupMenu::didCancel() |
| { |
| if (m_ownerElement) |
| m_ownerElement->popupDidHide(); |
| m_webExternalPopupMenu = 0; |
| } |
| |
| void ExternalPopupMenu::getPopupMenuInfo(WebPopupMenuInfo& info, HTMLSelectElement& ownerElement) |
| { |
| const HeapVector<Member<HTMLElement>>& listItems = ownerElement.listItems(); |
| size_t itemCount = listItems.size(); |
| size_t count = 0; |
| Vector<WebMenuItemInfo> items(itemCount); |
| for (size_t i = 0; i < itemCount; ++i) { |
| if (ownerElement.itemIsDisplayNone(*listItems[i])) |
| continue; |
| |
| Element& itemElement = *listItems[i]; |
| WebMenuItemInfo& popupItem = items[count++]; |
| popupItem.label = ownerElement.itemText(itemElement); |
| popupItem.toolTip = itemElement.title(); |
| popupItem.checked = false; |
| if (isHTMLHRElement(itemElement)) { |
| popupItem.type = WebMenuItemInfo::Separator; |
| } else if (isHTMLOptGroupElement(itemElement)) { |
| popupItem.type = WebMenuItemInfo::Group; |
| } else { |
| popupItem.type = WebMenuItemInfo::Option; |
| popupItem.checked = toHTMLOptionElement(itemElement).selected(); |
| } |
| popupItem.enabled = !itemElement.isDisabledFormControl(); |
| const ComputedStyle& style = *ownerElement.itemComputedStyle(itemElement); |
| popupItem.textDirection = toWebTextDirection(style.direction()); |
| popupItem.hasTextDirectionOverride = isOverride(style.unicodeBidi()); |
| } |
| |
| const ComputedStyle& menuStyle = ownerElement.computedStyle() ? *ownerElement.computedStyle() : *ownerElement.ensureComputedStyle(); |
| info.itemHeight = menuStyle.font().getFontMetrics().height(); |
| info.itemFontSize = static_cast<int>(menuStyle.font().getFontDescription().computedSize()); |
| info.selectedIndex = toExternalPopupMenuItemIndex(ownerElement.optionToListIndex(ownerElement.selectedIndex()), ownerElement); |
| info.rightAligned = menuStyle.direction() == RTL; |
| info.allowMultipleSelection = ownerElement.multiple(); |
| if (count < itemCount) |
| items.shrink(count); |
| info.items = items; |
| |
| } |
| |
| int ExternalPopupMenu::toPopupMenuItemIndex(int externalPopupMenuItemIndex, HTMLSelectElement& ownerElement) |
| { |
| if (externalPopupMenuItemIndex < 0) |
| return externalPopupMenuItemIndex; |
| |
| int indexTracker = 0; |
| const HeapVector<Member<HTMLElement>>& items = ownerElement.listItems(); |
| for (int i = 0; i < static_cast<int>(items.size()); ++i) { |
| if (ownerElement.itemIsDisplayNone(*items[i])) |
| continue; |
| if (indexTracker++ == externalPopupMenuItemIndex) |
| return i; |
| } |
| return -1; |
| } |
| |
| int ExternalPopupMenu::toExternalPopupMenuItemIndex(int popupMenuItemIndex, HTMLSelectElement& ownerElement) |
| { |
| if (popupMenuItemIndex < 0) |
| return popupMenuItemIndex; |
| |
| size_t indexTracker = 0; |
| const HeapVector<Member<HTMLElement>>& items = ownerElement.listItems(); |
| for (int i = 0; i < static_cast<int>(items.size()); ++i) { |
| if (ownerElement.itemIsDisplayNone(*items[i])) |
| continue; |
| if (popupMenuItemIndex == i) |
| return indexTracker; |
| ++indexTracker; |
| } |
| return -1; |
| } |
| |
| } // namespace blink |