| /* |
| * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
| * (C) 1999 Antti Koivisto (koivisto@kde.org) |
| * (C) 2001 Dirk Mueller (mueller@kde.org) |
| * Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved. |
| * (C) 2006 Alexey Proskuryakov (ap@nypop.com) |
| * |
| * 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., 59 Temple Place - Suite 330, |
| * Boston, MA 02111-1307, USA. |
| * |
| */ |
| |
| #include "config.h" |
| #include "HTMLSelectElement.h" |
| |
| #include "CSSPropertyNames.h" |
| #include "CSSStyleSelector.h" |
| #include "CharacterNames.h" |
| #include "Document.h" |
| #include "Event.h" |
| #include "EventHandler.h" |
| #include "EventNames.h" |
| #include "FormDataList.h" |
| #include "Frame.h" |
| #include "HTMLFormElement.h" |
| #include "HTMLNames.h" |
| #include "HTMLOptionElement.h" |
| #include "HTMLOptionsCollection.h" |
| #include "KeyboardEvent.h" |
| #include "MouseEvent.h" |
| #include "RenderListBox.h" |
| #include "RenderMenuList.h" |
| #include <math.h> |
| #include <wtf/Vector.h> |
| |
| #if PLATFORM(MAC) |
| #define ARROW_KEYS_POP_MENU 1 |
| #else |
| #define ARROW_KEYS_POP_MENU 0 |
| #endif |
| |
| using namespace std; |
| using namespace WTF; |
| using namespace Unicode; |
| |
| namespace WebCore { |
| |
| using namespace EventNames; |
| using namespace HTMLNames; |
| |
| static const DOMTimeStamp typeAheadTimeout = 1000; |
| |
| HTMLSelectElement::HTMLSelectElement(Document* doc, HTMLFormElement* f) |
| : HTMLFormControlElementWithState(selectTag, doc, f) |
| , m_minwidth(0) |
| , m_size(0) |
| , m_multiple(false) |
| , m_recalcListItems(false) |
| , m_lastOnChangeIndex(-1) |
| , m_activeSelectionAnchorIndex(-1) |
| , m_activeSelectionEndIndex(-1) |
| , m_activeSelectionState(false) |
| , m_repeatingChar(0) |
| , m_lastCharTime(0) |
| { |
| } |
| |
| HTMLSelectElement::HTMLSelectElement(const QualifiedName& tagName, Document* doc, HTMLFormElement* f) |
| : HTMLFormControlElementWithState(tagName, doc, f) |
| , m_minwidth(0) |
| , m_size(0) |
| , m_multiple(false) |
| , m_recalcListItems(false) |
| , m_lastOnChangeIndex(-1) |
| , m_activeSelectionAnchorIndex(-1) |
| , m_activeSelectionEndIndex(-1) |
| , m_activeSelectionState(false) |
| , m_repeatingChar(0) |
| , m_lastCharTime(0) |
| { |
| } |
| |
| bool HTMLSelectElement::checkDTD(const Node* newChild) |
| { |
| // Make sure to keep <optgroup> in sync with this. |
| return newChild->isTextNode() || newChild->hasTagName(optionTag) || newChild->hasTagName(optgroupTag) || newChild->hasTagName(hrTag) || |
| newChild->hasTagName(scriptTag); |
| } |
| |
| void HTMLSelectElement::recalcStyle( StyleChange ch ) |
| { |
| if (hasChangedChild() && renderer()) { |
| if (usesMenuList()) |
| static_cast<RenderMenuList*>(renderer())->setOptionsChanged(true); |
| else |
| static_cast<RenderListBox*>(renderer())->setOptionsChanged(true); |
| } |
| |
| HTMLFormControlElementWithState::recalcStyle(ch); |
| } |
| |
| const AtomicString& HTMLSelectElement::type() const |
| { |
| static const AtomicString selectMultiple("select-multiple"); |
| static const AtomicString selectOne("select-one"); |
| return m_multiple ? selectMultiple : selectOne; |
| } |
| |
| int HTMLSelectElement::selectedIndex() const |
| { |
| // return the number of the first option selected |
| unsigned index = 0; |
| const Vector<HTMLElement*>& items = listItems(); |
| for (unsigned int i = 0; i < items.size(); i++) { |
| if (items[i]->hasLocalName(optionTag)) { |
| if (static_cast<HTMLOptionElement*>(items[i])->selected()) |
| return index; |
| index++; |
| } |
| } |
| return -1; |
| } |
| |
| int HTMLSelectElement::lastSelectedListIndex() const |
| { |
| // return the number of the last option selected |
| unsigned index = 0; |
| bool found = false; |
| const Vector<HTMLElement*>& items = listItems(); |
| for (unsigned int i = 0; i < items.size(); i++) { |
| if (items[i]->hasLocalName(optionTag)) { |
| if (static_cast<HTMLOptionElement*>(items[i])->selected()) { |
| index = i; |
| found = true; |
| } |
| } |
| } |
| return found ? (int) index : -1; |
| } |
| |
| void HTMLSelectElement::deselectItems(HTMLOptionElement* excludeElement) |
| { |
| const Vector<HTMLElement*>& items = listItems(); |
| unsigned i; |
| for (i = 0; i < items.size(); i++) { |
| if (items[i]->hasLocalName(optionTag) && (items[i] != excludeElement)) { |
| HTMLOptionElement* element = static_cast<HTMLOptionElement*>(items[i]); |
| element->setSelectedState(false); |
| } |
| } |
| } |
| |
| void HTMLSelectElement::setSelectedIndex(int optionIndex, bool deselect, bool fireOnChange) |
| { |
| const Vector<HTMLElement*>& items = listItems(); |
| int listIndex = optionToListIndex(optionIndex); |
| HTMLOptionElement* element = 0; |
| |
| if (!multiple()) |
| deselect = true; |
| |
| if (listIndex >= 0) { |
| if (m_activeSelectionAnchorIndex < 0 || deselect) |
| setActiveSelectionAnchorIndex(listIndex); |
| if (m_activeSelectionEndIndex < 0 || deselect) |
| setActiveSelectionEndIndex(listIndex); |
| element = static_cast<HTMLOptionElement*>(items[listIndex]); |
| element->setSelectedState(true); |
| } |
| |
| if (deselect) |
| deselectItems(element); |
| |
| scrollToSelection(); |
| |
| // This only gets called with fireOnChange for menu lists. |
| if (fireOnChange && usesMenuList()) |
| menuListOnChange(); |
| } |
| |
| int HTMLSelectElement::activeSelectionStartListIndex() const |
| { |
| if (m_activeSelectionAnchorIndex >= 0) |
| return m_activeSelectionAnchorIndex; |
| return optionToListIndex(selectedIndex()); |
| } |
| |
| int HTMLSelectElement::activeSelectionEndListIndex() const |
| { |
| if (m_activeSelectionEndIndex >= 0) |
| return m_activeSelectionEndIndex; |
| return lastSelectedListIndex(); |
| } |
| |
| unsigned HTMLSelectElement::length() const |
| { |
| unsigned len = 0; |
| const Vector<HTMLElement*>& items = listItems(); |
| for (unsigned i = 0; i < items.size(); ++i) { |
| if (items[i]->hasLocalName(optionTag)) |
| ++len; |
| } |
| return len; |
| } |
| |
| void HTMLSelectElement::add( HTMLElement *element, HTMLElement *before, ExceptionCode& ec) |
| { |
| RefPtr<HTMLElement> protectNewChild(element); // make sure the element is ref'd and deref'd so we don't leak it |
| |
| if (!element || !(element->hasLocalName(optionTag) || element->hasLocalName(hrTag))) |
| return; |
| |
| insertBefore(element, before, ec); |
| if (!ec) |
| setRecalcListItems(); |
| } |
| |
| void HTMLSelectElement::remove(int index) |
| { |
| ExceptionCode ec = 0; |
| int listIndex = optionToListIndex(index); |
| |
| const Vector<HTMLElement*>& items = listItems(); |
| if (listIndex < 0 || index >= int(items.size())) |
| return; // ### what should we do ? remove the last item? |
| |
| removeChild(items[listIndex], ec); |
| if (!ec) |
| setRecalcListItems(); |
| } |
| |
| String HTMLSelectElement::value() |
| { |
| unsigned i; |
| const Vector<HTMLElement*>& items = listItems(); |
| for (i = 0; i < items.size(); i++) { |
| if (items[i]->hasLocalName(optionTag) && static_cast<HTMLOptionElement*>(items[i])->selected()) |
| return static_cast<HTMLOptionElement*>(items[i])->value(); |
| } |
| return String(""); |
| } |
| |
| void HTMLSelectElement::setValue(const String &value) |
| { |
| if (value.isNull()) |
| return; |
| // find the option with value() matching the given parameter |
| // and make it the current selection. |
| const Vector<HTMLElement*>& items = listItems(); |
| unsigned optionIndex = 0; |
| for (unsigned i = 0; i < items.size(); i++) |
| if (items[i]->hasLocalName(optionTag)) { |
| if (static_cast<HTMLOptionElement*>(items[i])->value() == value) { |
| setSelectedIndex(optionIndex, true); |
| return; |
| } |
| optionIndex++; |
| } |
| } |
| |
| bool HTMLSelectElement::saveState(String& value) const |
| { |
| const Vector<HTMLElement*>& items = listItems(); |
| int l = items.size(); |
| Vector<char, 1024> characters(l); |
| for (int i = 0; i < l; ++i) { |
| HTMLElement* e = items[i]; |
| bool selected = e->hasLocalName(optionTag) && static_cast<HTMLOptionElement*>(e)->selected(); |
| characters[i] = selected ? 'X' : '.'; |
| } |
| value = String(characters, l); |
| return true; |
| } |
| |
| void HTMLSelectElement::restoreState(const String& state) |
| { |
| recalcListItems(); |
| |
| const Vector<HTMLElement*>& items = listItems(); |
| int l = items.size(); |
| for (int i = 0; i < l; i++) |
| if (items[i]->hasLocalName(optionTag)) |
| static_cast<HTMLOptionElement*>(items[i])->setSelectedState(state[i] == 'X'); |
| |
| setChanged(); |
| } |
| |
| bool HTMLSelectElement::insertBefore(PassRefPtr<Node> newChild, Node* refChild, ExceptionCode& ec) |
| { |
| bool result = HTMLFormControlElementWithState::insertBefore(newChild, refChild, ec); |
| if (result) |
| setRecalcListItems(); |
| return result; |
| } |
| |
| bool HTMLSelectElement::replaceChild(PassRefPtr<Node> newChild, Node *oldChild, ExceptionCode& ec) |
| { |
| bool result = HTMLFormControlElementWithState::replaceChild(newChild, oldChild, ec); |
| if (result) |
| setRecalcListItems(); |
| return result; |
| } |
| |
| bool HTMLSelectElement::removeChild(Node* oldChild, ExceptionCode& ec) |
| { |
| bool result = HTMLFormControlElementWithState::removeChild(oldChild, ec); |
| if (result) |
| setRecalcListItems(); |
| return result; |
| } |
| |
| bool HTMLSelectElement::appendChild(PassRefPtr<Node> newChild, ExceptionCode& ec) |
| { |
| bool result = HTMLFormControlElementWithState::appendChild(newChild, ec); |
| if (result) |
| setRecalcListItems(); |
| return result; |
| } |
| |
| ContainerNode* HTMLSelectElement::addChild(PassRefPtr<Node> newChild) |
| { |
| ContainerNode* result = HTMLFormControlElementWithState::addChild(newChild); |
| if (result) |
| setRecalcListItems(); |
| return result; |
| } |
| |
| void HTMLSelectElement::parseMappedAttribute(MappedAttribute *attr) |
| { |
| bool oldUsesMenuList = usesMenuList(); |
| if (attr->name() == sizeAttr) { |
| int oldSize = m_size; |
| // Set the attribute value to a number. |
| // This is important since the style rules for this attribute can determine the appearance property. |
| int size = attr->value().toInt(); |
| String attrSize = String::number(size); |
| if (attrSize != attr->value()) |
| attr->setValue(attrSize); |
| |
| m_size = max(size, 1); |
| if ((oldUsesMenuList != usesMenuList() || !oldUsesMenuList && m_size != oldSize) && attached()) { |
| detach(); |
| attach(); |
| } |
| } else if (attr->name() == widthAttr) { |
| m_minwidth = max(attr->value().toInt(), 0); |
| } else if (attr->name() == multipleAttr) { |
| m_multiple = (!attr->isNull()); |
| if (oldUsesMenuList != usesMenuList() && attached()) { |
| detach(); |
| attach(); |
| } |
| } else if (attr->name() == accesskeyAttr) { |
| // FIXME: ignore for the moment |
| } else if (attr->name() == alignAttr) { |
| // Don't map 'align' attribute. This matches what Firefox, Opera and IE do. |
| // See http://bugs.webkit.org/show_bug.cgi?id=12072 |
| } else if (attr->name() == onfocusAttr) { |
| setHTMLEventListener(focusEvent, attr); |
| } else if (attr->name() == onblurAttr) { |
| setHTMLEventListener(blurEvent, attr); |
| } else if (attr->name() == onchangeAttr) { |
| setHTMLEventListener(changeEvent, attr); |
| } else |
| HTMLFormControlElementWithState::parseMappedAttribute(attr); |
| } |
| |
| bool HTMLSelectElement::isKeyboardFocusable(KeyboardEvent* event) const |
| { |
| if (renderer()) |
| return isFocusable(); |
| return HTMLFormControlElementWithState::isKeyboardFocusable(event); |
| } |
| |
| bool HTMLSelectElement::isMouseFocusable() const |
| { |
| if (renderer()) |
| return isFocusable(); |
| return HTMLFormControlElementWithState::isMouseFocusable(); |
| } |
| |
| bool HTMLSelectElement::canSelectAll() const |
| { |
| return !usesMenuList(); |
| } |
| |
| void HTMLSelectElement::selectAll() |
| { |
| ASSERT(!usesMenuList()); |
| if (!renderer() || !multiple()) |
| return; |
| |
| // Save the selection so it can be compared to the new selectAll selection when we call onChange |
| saveLastSelection(); |
| |
| m_activeSelectionState = true; |
| setActiveSelectionAnchorIndex(nextSelectableListIndex(-1)); |
| setActiveSelectionEndIndex(previousSelectableListIndex(-1)); |
| |
| updateListBoxSelection(false); |
| listBoxOnChange(); |
| } |
| |
| RenderObject *HTMLSelectElement::createRenderer(RenderArena *arena, RenderStyle *style) |
| { |
| if (usesMenuList()) |
| return new (arena) RenderMenuList(this); |
| return new (arena) RenderListBox(this); |
| } |
| |
| bool HTMLSelectElement::appendFormData(FormDataList& list, bool) |
| { |
| bool successful = false; |
| const Vector<HTMLElement*>& items = listItems(); |
| |
| unsigned i; |
| for (i = 0; i < items.size(); i++) { |
| if (items[i]->hasLocalName(optionTag)) { |
| HTMLOptionElement *option = static_cast<HTMLOptionElement*>(items[i]); |
| if (option->selected()) { |
| list.appendData(name(), option->value()); |
| successful = true; |
| } |
| } |
| } |
| |
| // ### this case should not happen. make sure that we select the first option |
| // in any case. otherwise we have no consistency with the DOM interface. FIXME! |
| // we return the first one if it was a combobox select |
| if (!successful && !m_multiple && m_size <= 1 && items.size() && |
| (items[0]->hasLocalName(optionTag))) { |
| HTMLOptionElement *option = static_cast<HTMLOptionElement*>(items[0]); |
| if (option->value().isNull()) |
| list.appendData(name(), option->text().stripWhiteSpace()); |
| else |
| list.appendData(name(), option->value()); |
| successful = true; |
| } |
| |
| return successful; |
| } |
| |
| int HTMLSelectElement::optionToListIndex(int optionIndex) const |
| { |
| const Vector<HTMLElement*>& items = listItems(); |
| int listSize = (int)items.size(); |
| if (optionIndex < 0 || optionIndex >= listSize) |
| return -1; |
| |
| int optionIndex2 = -1; |
| for (int listIndex = 0; listIndex < listSize; listIndex++) { |
| if (items[listIndex]->hasLocalName(optionTag)) { |
| optionIndex2++; |
| if (optionIndex2 == optionIndex) |
| return listIndex; |
| } |
| } |
| return -1; |
| } |
| |
| int HTMLSelectElement::listToOptionIndex(int listIndex) const |
| { |
| const Vector<HTMLElement*>& items = listItems(); |
| if (listIndex < 0 || listIndex >= int(items.size()) || |
| !items[listIndex]->hasLocalName(optionTag)) |
| return -1; |
| |
| int optionIndex = 0; // actual index of option not counting OPTGROUP entries that may be in list |
| for (int i = 0; i < listIndex; i++) |
| if (items[i]->hasLocalName(optionTag)) |
| optionIndex++; |
| return optionIndex; |
| } |
| |
| PassRefPtr<HTMLOptionsCollection> HTMLSelectElement::options() |
| { |
| return new HTMLOptionsCollection(this); |
| } |
| |
| void HTMLSelectElement::recalcListItems() const |
| { |
| Node* current = firstChild(); |
| m_listItems.clear(); |
| HTMLOptionElement* foundSelected = 0; |
| while (current) { |
| if (current->hasTagName(optgroupTag) && current->firstChild()) { |
| // ### what if optgroup contains just comments? don't want one of no options in it... |
| m_listItems.append(static_cast<HTMLElement*>(current)); |
| current = current->firstChild(); |
| } |
| if (current->hasTagName(optionTag)) { |
| m_listItems.append(static_cast<HTMLElement*>(current)); |
| if (!foundSelected && (usesMenuList() || (!m_multiple && static_cast<HTMLOptionElement*>(current)->selected()))) { |
| foundSelected = static_cast<HTMLOptionElement*>(current); |
| foundSelected->setSelectedState(true); |
| } else if (foundSelected && !m_multiple && static_cast<HTMLOptionElement*>(current)->selected()) { |
| foundSelected->setSelectedState(false); |
| foundSelected = static_cast<HTMLOptionElement*>(current); |
| } |
| } |
| if (current->hasTagName(hrTag)) |
| m_listItems.append(static_cast<HTMLElement*>(current)); |
| |
| Node* parent = current->parentNode(); |
| current = current->nextSibling(); |
| if (!current) { |
| if (parent != this) |
| current = parent->nextSibling(); |
| } |
| } |
| m_recalcListItems = false; |
| } |
| |
| void HTMLSelectElement::childrenChanged() |
| { |
| setRecalcListItems(); |
| |
| HTMLFormControlElementWithState::childrenChanged(); |
| } |
| |
| void HTMLSelectElement::setRecalcListItems() |
| { |
| m_recalcListItems = true; |
| if (renderer()) { |
| if (usesMenuList()) |
| static_cast<RenderMenuList*>(renderer())->setOptionsChanged(true); |
| else |
| static_cast<RenderListBox*>(renderer())->setOptionsChanged(true); |
| } |
| if (!inDocument()) |
| m_collectionInfo.reset(); |
| setChanged(); |
| } |
| |
| void HTMLSelectElement::reset() |
| { |
| bool optionSelected = false; |
| HTMLOptionElement* firstOption = 0; |
| const Vector<HTMLElement*>& items = listItems(); |
| unsigned i; |
| for (i = 0; i < items.size(); i++) { |
| if (items[i]->hasLocalName(optionTag)) { |
| HTMLOptionElement *option = static_cast<HTMLOptionElement*>(items[i]); |
| if (!option->getAttribute(selectedAttr).isNull()) { |
| option->setSelectedState(true); |
| optionSelected = true; |
| } else |
| option->setSelectedState(false); |
| if (!firstOption) |
| firstOption = option; |
| } |
| } |
| if (!optionSelected && firstOption && usesMenuList()) |
| firstOption->setSelectedState(true); |
| |
| setChanged(); |
| } |
| |
| void HTMLSelectElement::dispatchFocusEvent() |
| { |
| if (usesMenuList()) |
| // Save the selection so it can be compared to the new selection when we call onChange during dispatchBlurEvent. |
| saveLastSelection(); |
| HTMLFormControlElementWithState::dispatchFocusEvent(); |
| } |
| |
| void HTMLSelectElement::dispatchBlurEvent() |
| { |
| // We only need to fire onChange here for menu lists, because we fire onChange for list boxes whenever the selection change is actually made. |
| // This matches other browsers' behavior. |
| if (usesMenuList()) |
| menuListOnChange(); |
| HTMLFormControlElementWithState::dispatchBlurEvent(); |
| } |
| |
| void HTMLSelectElement::defaultEventHandler(Event* evt) |
| { |
| if (usesMenuList()) |
| menuListDefaultEventHandler(evt); |
| else |
| listBoxDefaultEventHandler(evt); |
| |
| if (evt->defaultHandled()) |
| return; |
| |
| if (evt->type() == keypressEvent && evt->isKeyboardEvent()) { |
| KeyboardEvent* keyboardEvent = static_cast<KeyboardEvent*>(evt); |
| |
| if (!keyboardEvent->ctrlKey() && !keyboardEvent->altKey() && !keyboardEvent->metaKey() && |
| isPrintableChar(keyboardEvent->charCode())) { |
| typeAheadFind(keyboardEvent); |
| evt->setDefaultHandled(); |
| return; |
| } |
| } |
| |
| HTMLFormControlElementWithState::defaultEventHandler(evt); |
| } |
| |
| void HTMLSelectElement::menuListDefaultEventHandler(Event* evt) |
| { |
| RenderMenuList* menuList = static_cast<RenderMenuList*>(renderer()); |
| |
| // Use key press event here since sending simulated mouse events |
| // on key down blocks the proper sending of the key press event. |
| if (evt->type() == keypressEvent) { |
| if (!renderer() || !evt->isKeyboardEvent()) |
| return; |
| String keyIdentifier = static_cast<KeyboardEvent*>(evt)->keyIdentifier(); |
| bool handled = false; |
| #if ARROW_KEYS_POP_MENU |
| if (keyIdentifier == "Enter") { |
| menuListOnChange(); |
| if (form()) |
| form()->submitClick(evt); |
| handled = true; |
| } |
| if (keyIdentifier == "Down" || keyIdentifier == "Up" || keyIdentifier == "U+0020") { |
| focus(); |
| // Save the selection so it can be compared to the new selection when we call onChange during setSelectedIndex, |
| // which gets called from RenderMenuList::valueChanged, which gets called after the user makes a selection from the menu. |
| saveLastSelection(); |
| menuList->showPopup(); |
| handled = true; |
| } |
| #else |
| int listIndex = optionToListIndex(selectedIndex()); |
| if (keyIdentifier == "Down" || keyIdentifier == "Right") { |
| int size = listItems().size(); |
| for (listIndex += 1; |
| listIndex >= 0 && listIndex < size && (listItems()[listIndex]->disabled() || !listItems()[listIndex]->hasTagName(optionTag)); |
| ++listIndex); |
| |
| if (listIndex >= 0 && listIndex < size) |
| setSelectedIndex(listToOptionIndex(listIndex)); |
| handled = true; |
| } else if (keyIdentifier == "Up" || keyIdentifier == "Left") { |
| int size = listItems().size(); |
| for (listIndex -= 1; |
| listIndex >= 0 && listIndex < size && (listItems()[listIndex]->disabled() || !listItems()[listIndex]->hasTagName(optionTag)); |
| --listIndex); |
| |
| if (listIndex >= 0 && listIndex < size) |
| setSelectedIndex(listToOptionIndex(listIndex)); |
| handled = true; |
| } else if (keyIdentifier == "Enter") { |
| // listIndex should already be selected, but this will fire the onchange handler. |
| setSelectedIndex(listToOptionIndex(listIndex), true, true); |
| handled = true; |
| } |
| #endif |
| if (handled) |
| evt->setDefaultHandled(); |
| |
| } |
| if (evt->type() == mousedownEvent && evt->isMouseEvent() && static_cast<MouseEvent*>(evt)->button() == LeftButton) { |
| focus(); |
| if (menuList->popupIsVisible()) |
| menuList->hidePopup(); |
| else { |
| // Save the selection so it can be compared to the new selection when we call onChange during setSelectedIndex, |
| // which gets called from RenderMenuList::valueChanged, which gets called after the user makes a selection from the menu. |
| saveLastSelection(); |
| menuList->showPopup(); |
| } |
| evt->setDefaultHandled(); |
| } |
| } |
| |
| void HTMLSelectElement::listBoxDefaultEventHandler(Event* evt) |
| { |
| if (!renderer()) |
| return; |
| |
| if (evt->type() == mousedownEvent && evt->isMouseEvent() && static_cast<MouseEvent*>(evt)->button() == LeftButton) { |
| focus(); |
| |
| MouseEvent* mEvt = static_cast<MouseEvent*>(evt); |
| int listIndex = static_cast<RenderListBox*>(renderer())->listIndexAtOffset(mEvt->offsetX(), mEvt->offsetY()); |
| if (listIndex >= 0) { |
| // Save the selection so it can be compared to the new selection when we call onChange during mouseup, or after autoscroll finishes. |
| saveLastSelection(); |
| |
| m_activeSelectionState = true; |
| |
| bool multiSelectKeyPressed = false; |
| #if PLATFORM(MAC) |
| multiSelectKeyPressed = mEvt->metaKey(); |
| #else |
| multiSelectKeyPressed = mEvt->ctrlKey(); |
| #endif |
| |
| bool shiftSelect = multiple() && mEvt->shiftKey(); |
| bool multiSelect = multiple() && multiSelectKeyPressed && !mEvt->shiftKey(); |
| |
| HTMLElement* clickedElement = listItems()[listIndex]; |
| HTMLOptionElement* option = 0; |
| if (clickedElement->hasLocalName(optionTag)) { |
| option = static_cast<HTMLOptionElement*>(clickedElement); |
| |
| // Keep track of whether an active selection (like during drag selection), should select or deselect |
| if (option->selected() && multiSelectKeyPressed) |
| m_activeSelectionState = false; |
| |
| if (!m_activeSelectionState) |
| option->setSelectedState(false); |
| } |
| |
| // If we're not in any special multiple selection mode, then deselect all other items, excluding the clicked option. |
| // If no option was clicked, then this will deselect all items in the list. |
| if (!shiftSelect && !multiSelect) |
| deselectItems(option); |
| |
| // If the anchor hasn't been set, and we're doing a single selection or a shift selection, then initialize the anchor to the first selected index. |
| if (m_activeSelectionAnchorIndex < 0 && !multiSelect) |
| setActiveSelectionAnchorIndex(selectedIndex()); |
| |
| // Set the selection state of the clicked option |
| if (option && !option->disabled()) |
| option->setSelectedState(true); |
| |
| // If there was no selectedIndex() for the previous initialization, or |
| // If we're doing a single selection, or a multiple selection (using cmd or ctrl), then initialize the anchor index to the listIndex that just got clicked. |
| if (listIndex >= 0 && (m_activeSelectionAnchorIndex < 0 || !shiftSelect)) |
| setActiveSelectionAnchorIndex(listIndex); |
| |
| setActiveSelectionEndIndex(listIndex); |
| updateListBoxSelection(!multiSelect); |
| |
| if (Frame* frame = document()->frame()) |
| frame->eventHandler()->setMouseDownMayStartAutoscroll(); |
| |
| evt->setDefaultHandled(); |
| } |
| } else if (evt->type() == mouseupEvent && evt->isMouseEvent() && static_cast<MouseEvent*>(evt)->button() == LeftButton && document()->frame()->eventHandler()->autoscrollRenderer() != renderer()) |
| // This makes sure we fire onChange for a single click. For drag selection, onChange will fire when the autoscroll timer stops. |
| listBoxOnChange(); |
| else if (evt->type() == keypressEvent) { |
| if (!evt->isKeyboardEvent()) |
| return; |
| String keyIdentifier = static_cast<KeyboardEvent*>(evt)->keyIdentifier(); |
| |
| if (keyIdentifier == "Enter") { |
| if (form()) |
| form()->submitClick(evt); |
| evt->setDefaultHandled(); |
| return; |
| } |
| |
| int endIndex = 0; |
| if (m_activeSelectionEndIndex < 0) { |
| // Initialize the end index |
| if (keyIdentifier == "Down") |
| endIndex = nextSelectableListIndex(lastSelectedListIndex()); |
| else if (keyIdentifier == "Up") |
| endIndex = previousSelectableListIndex(optionToListIndex(selectedIndex())); |
| } else { |
| // Set the end index based on the current end index |
| if (keyIdentifier == "Down") |
| endIndex = nextSelectableListIndex(m_activeSelectionEndIndex); |
| else if (keyIdentifier == "Up") |
| endIndex = previousSelectableListIndex(m_activeSelectionEndIndex); |
| } |
| |
| if (keyIdentifier == "Down" || keyIdentifier == "Up") { |
| // Save the selection so it can be compared to the new selection when we call onChange immediately after making the new selection. |
| saveLastSelection(); |
| |
| ASSERT(endIndex >= 0 && (unsigned)endIndex < listItems().size()); |
| setActiveSelectionEndIndex(endIndex); |
| |
| // If the anchor is unitialized, or if we're going to deselect all other options, then set the anchor index equal to the end index. |
| bool deselectOthers = !multiple() || !static_cast<KeyboardEvent*>(evt)->shiftKey(); |
| if (m_activeSelectionAnchorIndex < 0 || deselectOthers) { |
| m_activeSelectionState = true; |
| if (deselectOthers) |
| deselectItems(); |
| setActiveSelectionAnchorIndex(m_activeSelectionEndIndex); |
| } |
| |
| static_cast<RenderListBox*>(renderer())->scrollToRevealElementAtListIndex(endIndex); |
| updateListBoxSelection(deselectOthers); |
| listBoxOnChange(); |
| evt->setDefaultHandled(); |
| } |
| } |
| } |
| |
| void HTMLSelectElement::setActiveSelectionAnchorIndex(int index) |
| { |
| m_activeSelectionAnchorIndex = index; |
| |
| // Cache the selection state so we can restore the old selection as the new selection pivots around this anchor index |
| const Vector<HTMLElement*>& items = listItems(); |
| m_cachedStateForActiveSelection.clear(); |
| for (unsigned i = 0; i < items.size(); i++) { |
| if (items[i]->hasLocalName(optionTag)) { |
| HTMLOptionElement* option = static_cast<HTMLOptionElement*>(items[i]); |
| m_cachedStateForActiveSelection.append(option->selected()); |
| } else |
| m_cachedStateForActiveSelection.append(false); |
| } |
| } |
| |
| void HTMLSelectElement::updateListBoxSelection(bool deselectOtherOptions) |
| { |
| ASSERT(renderer() && renderer()->isListBox()); |
| |
| unsigned start; |
| unsigned end; |
| ASSERT(m_activeSelectionAnchorIndex >= 0); |
| start = min(m_activeSelectionAnchorIndex, m_activeSelectionEndIndex); |
| end = max(m_activeSelectionAnchorIndex, m_activeSelectionEndIndex); |
| |
| const Vector<HTMLElement*>& items = listItems(); |
| for (unsigned i = 0; i < items.size(); i++) { |
| if (items[i]->hasLocalName(optionTag)) { |
| HTMLOptionElement* option = static_cast<HTMLOptionElement*>(items[i]); |
| if (!option->disabled()) { |
| if (i >= start && i <= end) |
| option->setSelectedState(m_activeSelectionState); |
| else if (deselectOtherOptions) |
| option->setSelectedState(false); |
| else |
| option->setSelectedState(m_cachedStateForActiveSelection[i]); |
| } |
| } |
| } |
| |
| scrollToSelection(); |
| } |
| |
| void HTMLSelectElement::menuListOnChange() |
| { |
| ASSERT(usesMenuList()); |
| int selected = selectedIndex(); |
| if (m_lastOnChangeIndex != selected) { |
| m_lastOnChangeIndex = selected; |
| onChange(); |
| } |
| } |
| |
| void HTMLSelectElement::listBoxOnChange() |
| { |
| ASSERT(!usesMenuList()); |
| |
| const Vector<HTMLElement*>& items = listItems(); |
| |
| // If the cached selection list is empty, or the size has changed, then fire onChange, and return early. |
| if (m_lastOnChangeSelection.isEmpty() || m_lastOnChangeSelection.size() != items.size()) { |
| onChange(); |
| return; |
| } |
| |
| // Update m_lastOnChangeSelection and fire onChange |
| bool fireOnChange = false; |
| for (unsigned i = 0; i < items.size(); i++) { |
| bool selected = false; |
| if (items[i]->hasLocalName(optionTag)) |
| selected = static_cast<HTMLOptionElement*>(items[i])->selected(); |
| if (selected != m_lastOnChangeSelection[i]) |
| fireOnChange = true; |
| m_lastOnChangeSelection[i] = selected; |
| } |
| if (fireOnChange) |
| onChange(); |
| } |
| |
| void HTMLSelectElement::saveLastSelection() |
| { |
| const Vector<HTMLElement*>& items = listItems(); |
| |
| if (usesMenuList()) { |
| m_lastOnChangeIndex = selectedIndex(); |
| return; |
| } |
| |
| m_lastOnChangeSelection.clear(); |
| for (unsigned i = 0; i < items.size(); i++) { |
| if (items[i]->hasLocalName(optionTag)) { |
| HTMLOptionElement* option = static_cast<HTMLOptionElement*>(items[i]); |
| m_lastOnChangeSelection.append(option->selected()); |
| } else |
| m_lastOnChangeSelection.append(false); |
| } |
| } |
| |
| static String stripLeadingWhiteSpace(const String& string) |
| { |
| int length = string.length(); |
| int i; |
| for (i = 0; i < length; ++i) |
| if (string[i] != noBreakSpace && |
| (string[i] <= 0x7F ? !isspace(string[i]) : (direction(string[i]) != WhiteSpaceNeutral))) |
| break; |
| |
| return string.substring(i, length - i); |
| } |
| |
| void HTMLSelectElement::typeAheadFind(KeyboardEvent* event) |
| { |
| if (event->timeStamp() < m_lastCharTime) |
| return; |
| |
| DOMTimeStamp delta = event->timeStamp() - m_lastCharTime; |
| |
| m_lastCharTime = event->timeStamp(); |
| |
| UChar c = event->charCode(); |
| |
| String prefix; |
| int searchStartOffset = 1; |
| if (delta > typeAheadTimeout) { |
| m_typedString = prefix = String(&c, 1); |
| m_repeatingChar = c; |
| } else { |
| m_typedString.append(c); |
| |
| if (c == m_repeatingChar) |
| // The user is likely trying to cycle through all the items starting with this character, so just search on the character |
| prefix = String(&c, 1); |
| else { |
| m_repeatingChar = 0; |
| prefix = m_typedString; |
| searchStartOffset = 0; |
| } |
| } |
| |
| const Vector<HTMLElement*>& items = listItems(); |
| int itemCount = items.size(); |
| if (itemCount < 1) |
| return; |
| |
| int index = (optionToListIndex(selectedIndex()) + searchStartOffset) % itemCount; |
| for (int i = 0; i < itemCount; i++, index = (index + 1) % itemCount) { |
| if (!items[index]->hasTagName(optionTag) || items[index]->disabled()) |
| continue; |
| |
| if (stripLeadingWhiteSpace(static_cast<HTMLOptionElement*>(items[index])->optionText()).startsWith(prefix, false)) { |
| setSelectedIndex(listToOptionIndex(index)); |
| setChanged(); |
| return; |
| } |
| } |
| } |
| |
| int HTMLSelectElement::nextSelectableListIndex(int startIndex) |
| { |
| const Vector<HTMLElement*>& items = listItems(); |
| int index = startIndex + 1; |
| while (index >= 0 && (unsigned)index < items.size() && (!items[index]->hasLocalName(optionTag) || items[index]->disabled())) |
| index++; |
| if ((unsigned) index == items.size()) |
| return startIndex; |
| return index; |
| } |
| |
| int HTMLSelectElement::previousSelectableListIndex(int startIndex) |
| { |
| const Vector<HTMLElement*>& items = listItems(); |
| if (startIndex == -1) |
| startIndex = items.size(); |
| int index = startIndex - 1; |
| while (index >= 0 && (unsigned)index < items.size() && (!items[index]->hasLocalName(optionTag) || items[index]->disabled())) |
| index--; |
| if (index == -1) |
| return startIndex; |
| return index; |
| } |
| |
| void HTMLSelectElement::accessKeyAction(bool sendToAnyElement) |
| { |
| focus(); |
| dispatchSimulatedClick(0, sendToAnyElement); |
| } |
| |
| void HTMLSelectElement::setMultiple(bool multiple) |
| { |
| setAttribute(multipleAttr, multiple ? "" : 0); |
| } |
| |
| void HTMLSelectElement::setSize(int size) |
| { |
| setAttribute(sizeAttr, String::number(size)); |
| } |
| |
| Node* HTMLSelectElement::namedItem(const String &name, bool caseSensitive) |
| { |
| return options()->namedItem(name, caseSensitive); |
| } |
| |
| Node* HTMLSelectElement::item(unsigned index) |
| { |
| return options()->item(index); |
| } |
| |
| void HTMLSelectElement::setOption(unsigned index, HTMLOptionElement* option, ExceptionCode& ec) |
| { |
| ec = 0; |
| if (index > INT_MAX) |
| index = INT_MAX; |
| int diff = index - length(); |
| HTMLElement* before = 0; |
| // out of array bounds ? first insert empty dummies |
| if (diff > 0) { |
| setLength(index, ec); |
| // replace an existing entry ? |
| } else if (diff < 0) { |
| before = static_cast<HTMLElement*>(options()->item(index+1)); |
| remove(index); |
| } |
| // finally add the new element |
| if (ec == 0) { |
| add(option, before, ec); |
| if (diff >= 0 && option->selected()) |
| setSelectedIndex(index, !m_multiple); |
| } |
| } |
| |
| void HTMLSelectElement::setLength(unsigned newLen, ExceptionCode& ec) |
| { |
| ec = 0; |
| if (newLen > INT_MAX) |
| newLen = INT_MAX; |
| int diff = length() - newLen; |
| |
| if (diff < 0) { // add dummy elements |
| do { |
| RefPtr<Element> option = document()->createElement("option", ec); |
| if (!option) |
| break; |
| add(static_cast<HTMLElement*>(option.get()), 0, ec); |
| if (ec) |
| break; |
| } while (++diff); |
| } |
| else // remove elements |
| while (diff-- > 0) |
| remove(newLen); |
| } |
| |
| void HTMLSelectElement::scrollToSelection() |
| { |
| if (renderer() && !usesMenuList()) |
| static_cast<RenderListBox*>(renderer())->selectionChanged(); |
| } |
| |
| } // namespace |
