| /* |
| * Copyright (C) 2014 Igalia S.L. |
| * |
| * 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. AND ITS 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 APPLE INC. OR ITS 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 "WebEditorClient.h" |
| |
| #include <WebCore/Document.h> |
| #include <WebCore/Editor.h> |
| #include <WebCore/EventNames.h> |
| #include <WebCore/Frame.h> |
| #include <WebCore/KeyboardEvent.h> |
| #include <WebCore/Node.h> |
| #include <WebCore/PlatformKeyboardEvent.h> |
| #include <WebCore/WindowsKeyboardCodes.h> |
| #include <wtf/NeverDestroyed.h> |
| |
| using namespace WebCore; |
| |
| namespace WebKit { |
| |
| // The idea for the array/map below comes from Blink's EditingBehavior.cpp. |
| |
| static const unsigned CtrlKey = 1 << 0; |
| static const unsigned AltKey = 1 << 1; |
| static const unsigned ShiftKey = 1 << 2; |
| static const unsigned MetaKey = 1 << 3; |
| |
| // Keys with special meaning. These will be delegated to the editor using |
| // the execCommand() method |
| struct KeyDownEntry { |
| unsigned virtualKey; |
| unsigned modifiers; |
| const char* name; |
| }; |
| |
| struct KeyPressEntry { |
| unsigned charCode; |
| unsigned modifiers; |
| const char* name; |
| }; |
| |
| static const KeyDownEntry keyDownEntries[] = { |
| { VK_LEFT, 0, "MoveLeft" }, |
| { VK_LEFT, ShiftKey, "MoveLeftAndModifySelection" }, |
| { VK_LEFT, CtrlKey, "MoveWordLeft" }, |
| { VK_LEFT, CtrlKey | ShiftKey, |
| "MoveWordLeftAndModifySelection" }, |
| { VK_RIGHT, 0, "MoveRight" }, |
| { VK_RIGHT, ShiftKey, "MoveRightAndModifySelection" }, |
| { VK_RIGHT, CtrlKey, "MoveWordRight" }, |
| { VK_RIGHT, CtrlKey | ShiftKey, "MoveWordRightAndModifySelection" }, |
| { VK_UP, 0, "MoveUp" }, |
| { VK_UP, ShiftKey, "MoveUpAndModifySelection" }, |
| { VK_PRIOR, ShiftKey, "MovePageUpAndModifySelection" }, |
| { VK_DOWN, 0, "MoveDown" }, |
| { VK_DOWN, ShiftKey, "MoveDownAndModifySelection" }, |
| { VK_NEXT, ShiftKey, "MovePageDownAndModifySelection" }, |
| { VK_UP, CtrlKey | ShiftKey, "MoveParagraphBackwardAndModifySelection" }, |
| { VK_DOWN, CtrlKey | ShiftKey, "MoveParagraphForwardAndModifySelection" }, |
| { VK_PRIOR, 0, "MovePageUp" }, |
| { VK_NEXT, 0, "MovePageDown" }, |
| { VK_HOME, 0, "MoveToBeginningOfLine" }, |
| { VK_HOME, ShiftKey, |
| "MoveToBeginningOfLineAndModifySelection" }, |
| { VK_HOME, CtrlKey, "MoveToBeginningOfDocument" }, |
| { VK_HOME, CtrlKey | ShiftKey, |
| "MoveToBeginningOfDocumentAndModifySelection" }, |
| { VK_END, 0, "MoveToEndOfLine" }, |
| { VK_END, ShiftKey, "MoveToEndOfLineAndModifySelection" }, |
| { VK_END, CtrlKey, "MoveToEndOfDocument" }, |
| { VK_END, CtrlKey | ShiftKey, |
| "MoveToEndOfDocumentAndModifySelection" }, |
| { VK_BACK, 0, "DeleteBackward" }, |
| { VK_BACK, ShiftKey, "DeleteBackward" }, |
| { VK_DELETE, 0, "DeleteForward" }, |
| { VK_BACK, CtrlKey, "DeleteWordBackward" }, |
| { VK_DELETE, CtrlKey, "DeleteWordForward" }, |
| { 'B', CtrlKey, "ToggleBold" }, |
| { 'I', CtrlKey, "ToggleItalic" }, |
| { 'U', CtrlKey, "ToggleUnderline" }, |
| { VK_ESCAPE, 0, "Cancel" }, |
| { VK_OEM_PERIOD, CtrlKey, "Cancel" }, |
| { VK_TAB, 0, "InsertTab" }, |
| { VK_TAB, ShiftKey, "InsertBacktab" }, |
| { VK_RETURN, 0, "InsertNewline" }, |
| { VK_RETURN, CtrlKey, "InsertNewline" }, |
| { VK_RETURN, AltKey, "InsertNewline" }, |
| { VK_RETURN, AltKey | ShiftKey, "InsertNewline" }, |
| { VK_RETURN, ShiftKey, "InsertLineBreak" }, |
| // These probably need handling somewhere else so do not execute them. The |
| // 'Cut' command is removing text so let's avoid losing the user losing data |
| // until we implement clipboard support wherever it should be. |
| { VK_INSERT, CtrlKey, "Copy" }, |
| { VK_INSERT, ShiftKey, "Paste" }, |
| { VK_DELETE, ShiftKey, "Cut" }, |
| { 'C', CtrlKey, "Copy" }, |
| { 'V', CtrlKey, "Paste" }, |
| { 'V', CtrlKey | ShiftKey, "PasteAndMatchStyle" }, |
| { 'X', CtrlKey, "Cut" }, |
| { 'A', CtrlKey, "SelectAll" }, |
| { 'Z', CtrlKey, "Undo" }, |
| { 'Z', CtrlKey | ShiftKey, "Redo" }, |
| { 'Y', CtrlKey, "Redo" }, |
| { VK_INSERT, 0, "OverWrite" }, |
| }; |
| |
| static const KeyPressEntry keyPressEntries[] = { |
| { '\t', 0, "InsertTab" }, |
| { '\t', ShiftKey, "InsertBacktab" }, |
| { '\r', 0, "InsertNewline" }, |
| { '\r', CtrlKey, "InsertNewline" }, |
| { '\r', ShiftKey, "InsertLineBreak" }, |
| { '\r', AltKey, "InsertNewline" }, |
| { '\r', AltKey | ShiftKey, "InsertNewline" }, |
| }; |
| |
| static const char* interpretKeyEvent(const KeyboardEvent& event) |
| { |
| static NeverDestroyed<HashMap<int, const char*>> keyDownCommandsMap; |
| static NeverDestroyed<HashMap<int, const char*>> keyPressCommandsMap; |
| |
| if (keyDownCommandsMap.get().isEmpty()) { |
| for (unsigned i = 0; i < WTF_ARRAY_LENGTH(keyDownEntries); i++) |
| keyDownCommandsMap.get().set(keyDownEntries[i].modifiers << 16 | keyDownEntries[i].virtualKey, keyDownEntries[i].name); |
| for (unsigned i = 0; i < WTF_ARRAY_LENGTH(keyPressEntries); i++) |
| keyPressCommandsMap.get().set(keyPressEntries[i].modifiers << 16 | keyPressEntries[i].charCode, keyPressEntries[i].name); |
| } |
| |
| unsigned modifiers = 0; |
| if (event.shiftKey()) |
| modifiers |= ShiftKey; |
| if (event.altKey()) |
| modifiers |= AltKey; |
| if (event.ctrlKey()) |
| modifiers |= CtrlKey; |
| if (event.metaKey()) |
| modifiers |= MetaKey; |
| |
| if (event.type() == eventNames().keydownEvent) { |
| int mapKey = modifiers << 16 | event.keyCode(); |
| return mapKey ? keyDownCommandsMap.get().get(mapKey) : nullptr; |
| } |
| |
| int mapKey = modifiers << 16 | event.charCode(); |
| return mapKey ? keyPressCommandsMap.get().get(mapKey) : nullptr; |
| } |
| |
| static void handleKeyPress(Frame& frame, KeyboardEvent& event, const PlatformKeyboardEvent& platformEvent) |
| { |
| String commandName = interpretKeyEvent(event); |
| |
| if (!commandName.isEmpty()) { |
| frame.editor().command(commandName).execute(); |
| event.setDefaultHandled(); |
| return; |
| } |
| |
| // Don't insert null or control characters as they can result in unexpected behaviour |
| if (event.charCode() < ' ') |
| return; |
| |
| // Don't insert anything if a modifier is pressed and it has not been handled yet |
| if (platformEvent.ctrlKey() || platformEvent.altKey()) |
| return; |
| |
| if (frame.editor().insertText(platformEvent.text(), &event)) |
| event.setDefaultHandled(); |
| } |
| |
| static void handleKeyDown(Frame& frame, KeyboardEvent& event, const PlatformKeyboardEvent&) |
| { |
| String commandName = interpretKeyEvent(event); |
| if (commandName.isEmpty()) |
| return; |
| |
| // We shouldn't insert text through the editor. Let WebCore decide |
| // how to handle that (say, Tab, which could also be used to |
| // change focus). |
| Editor::Command command = frame.editor().command(commandName); |
| if (command.isTextInsertion()) |
| return; |
| |
| command.execute(); |
| event.setDefaultHandled(); |
| } |
| |
| void WebEditorClient::handleKeyboardEvent(WebCore::KeyboardEvent* event) |
| { |
| ASSERT(event->target()); |
| auto* frame = downcast<Node>(event->target())->document().frame(); |
| ASSERT(frame); |
| |
| // FIXME: Reorder the checks in a more sensible way. |
| |
| auto* platformEvent = event->underlyingPlatformEvent(); |
| if (!platformEvent) |
| return; |
| |
| // If this was an IME event don't do anything. |
| if (platformEvent->windowsVirtualKeyCode() == VK_PROCESSKEY) |
| return; |
| |
| // Don't allow text insertion for nodes that cannot edit. |
| if (!frame->editor().canEdit()) |
| return; |
| |
| // This is just a normal text insertion, so wait to execute the insertion |
| // until a keypress event happens. This will ensure that the insertion will not |
| // be reflected in the contents of the field until the keyup DOM event. |
| if (event->type() == eventNames().keypressEvent) |
| return handleKeyPress(*frame, *event, *platformEvent); |
| if (event->type() == eventNames().keydownEvent) |
| return handleKeyDown(*frame, *event, *platformEvent); |
| } |
| |
| void WebEditorClient::handleInputMethodKeydown(WebCore::KeyboardEvent* event) |
| { |
| auto* platformEvent = event->underlyingPlatformEvent(); |
| if (platformEvent && platformEvent->windowsVirtualKeyCode() == VK_PROCESSKEY) |
| event->preventDefault(); |
| } |
| |
| } // namespace WebKit |