widget/SharedWidgetUtils.cpp
author Dorel Luca <dluca@mozilla.com>
Mon, 04 Dec 2017 18:01:09 +0200
changeset 394844 58fec9a96e269a57cc6f84bfe3a6dc6800acd955
parent 282426 e22b3043887ed36bf2c634c2924a7c8d39d226b1
child 448947 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
Backed out 7 changesets (bug 1377007) for failing build bustage on Linux pgo and faling Cpp's jsapi-tests r=backout on a CLOSED TREE Backed out changeset 9428a4ed7dec (bug 1377007) Backed out changeset 4407b43a8aff (bug 1377007) Backed out changeset 65a37a7f78a5 (bug 1377007) Backed out changeset 276fe6d9b716 (bug 1377007) Backed out changeset 1de46e60ffba (bug 1377007) Backed out changeset 893e303e17ec (bug 1377007) Backed out changeset 081a241e25d4 (bug 1377007)

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "WidgetUtils.h"

#include "mozilla/TextEvents.h"

#include "nsIBaseWindow.h"
#include "nsIDocShellTreeItem.h"
#include "nsIDocShell.h"
#include "nsIInterfaceRequestorUtils.h"
#include "nsPIDOMWindow.h"

namespace mozilla {
namespace widget {

// static
void
WidgetUtils::Shutdown()
{
  WidgetKeyboardEvent::Shutdown();
}

// static
already_AddRefed<nsIWidget>
WidgetUtils::DOMWindowToWidget(nsPIDOMWindowOuter* aDOMWindow)
{
  nsCOMPtr<nsIWidget> widget;
  nsCOMPtr<nsPIDOMWindowOuter> window = aDOMWindow;

  if (window) {
    nsCOMPtr<nsIBaseWindow> baseWin(do_QueryInterface(window->GetDocShell()));

    while (!widget && baseWin) {
      baseWin->GetParentWidget(getter_AddRefs(widget));
      if (!widget) {
        nsCOMPtr<nsIDocShellTreeItem> docShellAsItem(do_QueryInterface(baseWin));
        if (!docShellAsItem)
          return nullptr;

        nsCOMPtr<nsIDocShellTreeItem> parent;
        docShellAsItem->GetParent(getter_AddRefs(parent));

        window = do_GetInterface(parent);
        if (!window)
          return nullptr;

        baseWin = do_QueryInterface(window->GetDocShell());
      }
    }
  }

  return widget.forget();
}

// static
uint32_t
WidgetUtils::ComputeKeyCodeFromChar(uint32_t aCharCode)
{
  if (aCharCode >= 'A' && aCharCode <= 'Z') {
    return aCharCode - 'A' + NS_VK_A;
  }
  if (aCharCode >= 'a' && aCharCode <= 'z') {
    return aCharCode - 'a' + NS_VK_A;
  }
  if (aCharCode >= '0' && aCharCode <= '9') {
    return aCharCode - '0' + NS_VK_0;
  }
  switch (aCharCode) {
    case ' ': return NS_VK_SPACE;
    case '\t': return NS_VK_TAB;
    case ':': return NS_VK_COLON;
    case ';': return NS_VK_SEMICOLON;
    case '<': return NS_VK_LESS_THAN;
    case '=': return NS_VK_EQUALS;
    case '>': return NS_VK_GREATER_THAN;
    case '?': return NS_VK_QUESTION_MARK;
    case '@': return NS_VK_AT;
    case '^': return NS_VK_CIRCUMFLEX;
    case '!': return NS_VK_EXCLAMATION;
    case '"': return NS_VK_DOUBLE_QUOTE;
    case '#': return NS_VK_HASH;
    case '$': return NS_VK_DOLLAR;
    case '%': return NS_VK_PERCENT;
    case '&': return NS_VK_AMPERSAND;
    case '_': return NS_VK_UNDERSCORE;
    case '(': return NS_VK_OPEN_PAREN;
    case ')': return NS_VK_CLOSE_PAREN;
    case '*': return NS_VK_ASTERISK;
    case '+': return NS_VK_PLUS;
    case '|': return NS_VK_PIPE;
    case '-': return NS_VK_HYPHEN_MINUS;
    case '{': return NS_VK_OPEN_CURLY_BRACKET;
    case '}': return NS_VK_CLOSE_CURLY_BRACKET;
    case '~': return NS_VK_TILDE;
    case ',': return NS_VK_COMMA;
    case '.': return NS_VK_PERIOD;
    case '/': return NS_VK_SLASH;
    case '`': return NS_VK_BACK_QUOTE;
    case '[': return NS_VK_OPEN_BRACKET;
    case '\\': return NS_VK_BACK_SLASH;
    case ']': return NS_VK_CLOSE_BRACKET;
    case '\'': return NS_VK_QUOTE;
  }
  return 0;
}

// static
void
WidgetUtils::GetLatinCharCodeForKeyCode(uint32_t aKeyCode,
                                        bool aIsCapsLock,
                                        uint32_t* aUnshiftedCharCode,
                                        uint32_t* aShiftedCharCode)
{
  MOZ_ASSERT(aUnshiftedCharCode && aShiftedCharCode,
             "aUnshiftedCharCode and aShiftedCharCode must not be NULL");

  if (aKeyCode >= NS_VK_A && aKeyCode <= NS_VK_Z) {
    *aUnshiftedCharCode = *aShiftedCharCode = aKeyCode;
    if (aIsCapsLock) {
      *aShiftedCharCode += 0x20;
    } else {
      *aUnshiftedCharCode += 0x20;
    }
    return;
  }

  // aShiftedCharCode must be zero for non-alphabet keys.
  *aShiftedCharCode = 0;

  if (aKeyCode >= NS_VK_0 && aKeyCode <= NS_VK_9) {
    *aUnshiftedCharCode = aKeyCode;
    return;
  }

  switch (aKeyCode) {
    case NS_VK_SPACE:               *aUnshiftedCharCode = ' '; break;
    case NS_VK_COLON:               *aUnshiftedCharCode = ':'; break;
    case NS_VK_SEMICOLON:           *aUnshiftedCharCode = ';'; break;
    case NS_VK_LESS_THAN:           *aUnshiftedCharCode = '<'; break;
    case NS_VK_EQUALS:              *aUnshiftedCharCode = '='; break;
    case NS_VK_GREATER_THAN:        *aUnshiftedCharCode = '>'; break;
    case NS_VK_QUESTION_MARK:       *aUnshiftedCharCode = '?'; break;
    case NS_VK_AT:                  *aUnshiftedCharCode = '@'; break;
    case NS_VK_CIRCUMFLEX:          *aUnshiftedCharCode = '^'; break;
    case NS_VK_EXCLAMATION:         *aUnshiftedCharCode = '!'; break;
    case NS_VK_DOUBLE_QUOTE:        *aUnshiftedCharCode = '"'; break;
    case NS_VK_HASH:                *aUnshiftedCharCode = '#'; break;
    case NS_VK_DOLLAR:              *aUnshiftedCharCode = '$'; break;
    case NS_VK_PERCENT:             *aUnshiftedCharCode = '%'; break;
    case NS_VK_AMPERSAND:           *aUnshiftedCharCode = '&'; break;
    case NS_VK_UNDERSCORE:          *aUnshiftedCharCode = '_'; break;
    case NS_VK_OPEN_PAREN:          *aUnshiftedCharCode = '('; break;
    case NS_VK_CLOSE_PAREN:         *aUnshiftedCharCode = ')'; break;
    case NS_VK_ASTERISK:            *aUnshiftedCharCode = '*'; break;
    case NS_VK_PLUS:                *aUnshiftedCharCode = '+'; break;
    case NS_VK_PIPE:                *aUnshiftedCharCode = '|'; break;
    case NS_VK_HYPHEN_MINUS:        *aUnshiftedCharCode = '-'; break;
    case NS_VK_OPEN_CURLY_BRACKET:  *aUnshiftedCharCode = '{'; break;
    case NS_VK_CLOSE_CURLY_BRACKET: *aUnshiftedCharCode = '}'; break;
    case NS_VK_TILDE:               *aUnshiftedCharCode = '~'; break;
    case NS_VK_COMMA:               *aUnshiftedCharCode = ','; break;
    case NS_VK_PERIOD:              *aUnshiftedCharCode = '.'; break;
    case NS_VK_SLASH:               *aUnshiftedCharCode = '/'; break;
    case NS_VK_BACK_QUOTE:          *aUnshiftedCharCode = '`'; break;
    case NS_VK_OPEN_BRACKET:        *aUnshiftedCharCode = '['; break;
    case NS_VK_BACK_SLASH:          *aUnshiftedCharCode = '\\'; break;
    case NS_VK_CLOSE_BRACKET:       *aUnshiftedCharCode = ']'; break;
    case NS_VK_QUOTE:               *aUnshiftedCharCode = '\''; break;
    default:                        *aUnshiftedCharCode = 0; break;
  }
}

} // namespace widget
} // namespace mozilla