widget/SharedWidgetUtils.cpp

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
   2  *
   3  * This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "WidgetUtils.h"
   8
   9 #include "mozilla/TextEvents.h"
  10
  11 #include "nsIBaseWindow.h"
  12 #include "nsIDocShellTreeItem.h"
  13 #include "nsIDocShell.h"
  14 #include "nsIInterfaceRequestorUtils.h"
  15 #include "nsPIDOMWindow.h"
  16
  17 namespace mozilla {
  18 namespace widget {
  19
  20 // static
  21 void
  22 WidgetUtils::Shutdown()
  23 {
  24   WidgetKeyboardEvent::Shutdown();
  25 }
  26
  27 // static
  28 already_AddRefed<nsIWidget>
  29 WidgetUtils::DOMWindowToWidget(nsPIDOMWindowOuter* aDOMWindow)
  30 {
  31   nsCOMPtr<nsIWidget> widget;
  32   nsCOMPtr<nsPIDOMWindowOuter> window = aDOMWindow;
  33
  34   if (window) {
  35     nsCOMPtr<nsIBaseWindow> baseWin(do_QueryInterface(window->GetDocShell()));
  36
  37     while (!widget && baseWin) {
  38       baseWin->GetParentWidget(getter_AddRefs(widget));
  39       if (!widget) {
  40         nsCOMPtr<nsIDocShellTreeItem> docShellAsItem(do_QueryInterface(baseWin));
  41         if (!docShellAsItem)
  42           return nullptr;
  43
  44         nsCOMPtr<nsIDocShellTreeItem> parent;
  45         docShellAsItem->GetParent(getter_AddRefs(parent));
  46
  47         window = do_GetInterface(parent);
  48         if (!window)
  49           return nullptr;
  50
  51         baseWin = do_QueryInterface(window->GetDocShell());
  52       }
  53     }
  54   }
  55
  56   return widget.forget();
  57 }
  58
  59 // static
  60 uint32_t
  61 WidgetUtils::ComputeKeyCodeFromChar(uint32_t aCharCode)
  62 {
  63   if (aCharCode >= 'A' && aCharCode <= 'Z') {
  64     return aCharCode - 'A' + NS_VK_A;
  65   }
  66   if (aCharCode >= 'a' && aCharCode <= 'z') {
  67     return aCharCode - 'a' + NS_VK_A;
  68   }
  69   if (aCharCode >= '0' && aCharCode <= '9') {
  70     return aCharCode - '0' + NS_VK_0;
  71   }
  72   switch (aCharCode) {
  73     case ' ': return NS_VK_SPACE;
  74     case '\t': return NS_VK_TAB;
  75     case ':': return NS_VK_COLON;
  76     case ';': return NS_VK_SEMICOLON;
  77     case '<': return NS_VK_LESS_THAN;
  78     case '=': return NS_VK_EQUALS;
  79     case '>': return NS_VK_GREATER_THAN;
  80     case '?': return NS_VK_QUESTION_MARK;
  81     case '@': return NS_VK_AT;
  82     case '^': return NS_VK_CIRCUMFLEX;
  83     case '!': return NS_VK_EXCLAMATION;
  84     case '"': return NS_VK_DOUBLE_QUOTE;
  85     case '#': return NS_VK_HASH;
  86     case '$': return NS_VK_DOLLAR;
  87     case '%': return NS_VK_PERCENT;
  88     case '&': return NS_VK_AMPERSAND;
  89     case '_': return NS_VK_UNDERSCORE;
  90     case '(': return NS_VK_OPEN_PAREN;
  91     case ')': return NS_VK_CLOSE_PAREN;
  92     case '*': return NS_VK_ASTERISK;
  93     case '+': return NS_VK_PLUS;
  94     case '|': return NS_VK_PIPE;
  95     case '-': return NS_VK_HYPHEN_MINUS;
  96     case '{': return NS_VK_OPEN_CURLY_BRACKET;
  97     case '}': return NS_VK_CLOSE_CURLY_BRACKET;
  98     case '~': return NS_VK_TILDE;
  99     case ',': return NS_VK_COMMA;
 100     case '.': return NS_VK_PERIOD;
 101     case '/': return NS_VK_SLASH;
 102     case '`': return NS_VK_BACK_QUOTE;
 103     case '[': return NS_VK_OPEN_BRACKET;
 104     case '\\': return NS_VK_BACK_SLASH;
 105     case ']': return NS_VK_CLOSE_BRACKET;
 106     case '\'': return NS_VK_QUOTE;
 107   }
 108   return 0;
 109 }
 110
 111 // static
 112 void
 113 WidgetUtils::GetLatinCharCodeForKeyCode(uint32_t aKeyCode,
 114                                         bool aIsCapsLock,
 115                                         uint32_t* aUnshiftedCharCode,
 116                                         uint32_t* aShiftedCharCode)
 117 {
 118   MOZ_ASSERT(aUnshiftedCharCode && aShiftedCharCode,
 119              "aUnshiftedCharCode and aShiftedCharCode must not be NULL");
 120
 121   if (aKeyCode >= NS_VK_A && aKeyCode <= NS_VK_Z) {
 122     *aUnshiftedCharCode = *aShiftedCharCode = aKeyCode;
 123     if (aIsCapsLock) {
 124       *aShiftedCharCode += 0x20;
 125     } else {
 126       *aUnshiftedCharCode += 0x20;
 127     }
 128     return;
 129   }
 130
 131   // aShiftedCharCode must be zero for non-alphabet keys.
 132   *aShiftedCharCode = 0;
 133
 134   if (aKeyCode >= NS_VK_0 && aKeyCode <= NS_VK_9) {
 135     *aUnshiftedCharCode = aKeyCode;
 136     return;
 137   }
 138
 139   switch (aKeyCode) {
 140     case NS_VK_SPACE:               *aUnshiftedCharCode = ' '; break;
 141     case NS_VK_COLON:               *aUnshiftedCharCode = ':'; break;
 142     case NS_VK_SEMICOLON:           *aUnshiftedCharCode = ';'; break;
 143     case NS_VK_LESS_THAN:           *aUnshiftedCharCode = '<'; break;
 144     case NS_VK_EQUALS:              *aUnshiftedCharCode = '='; break;
 145     case NS_VK_GREATER_THAN:        *aUnshiftedCharCode = '>'; break;
 146     case NS_VK_QUESTION_MARK:       *aUnshiftedCharCode = '?'; break;
 147     case NS_VK_AT:                  *aUnshiftedCharCode = '@'; break;
 148     case NS_VK_CIRCUMFLEX:          *aUnshiftedCharCode = '^'; break;
 149     case NS_VK_EXCLAMATION:         *aUnshiftedCharCode = '!'; break;
 150     case NS_VK_DOUBLE_QUOTE:        *aUnshiftedCharCode = '"'; break;
 151     case NS_VK_HASH:                *aUnshiftedCharCode = '#'; break;
 152     case NS_VK_DOLLAR:              *aUnshiftedCharCode = '$'; break;
 153     case NS_VK_PERCENT:             *aUnshiftedCharCode = '%'; break;
 154     case NS_VK_AMPERSAND:           *aUnshiftedCharCode = '&'; break;
 155     case NS_VK_UNDERSCORE:          *aUnshiftedCharCode = '_'; break;
 156     case NS_VK_OPEN_PAREN:          *aUnshiftedCharCode = '('; break;
 157     case NS_VK_CLOSE_PAREN:         *aUnshiftedCharCode = ')'; break;
 158     case NS_VK_ASTERISK:            *aUnshiftedCharCode = '*'; break;
 159     case NS_VK_PLUS:                *aUnshiftedCharCode = '+'; break;
 160     case NS_VK_PIPE:                *aUnshiftedCharCode = '|'; break;
 161     case NS_VK_HYPHEN_MINUS:        *aUnshiftedCharCode = '-'; break;
 162     case NS_VK_OPEN_CURLY_BRACKET:  *aUnshiftedCharCode = '{'; break;
 163     case NS_VK_CLOSE_CURLY_BRACKET: *aUnshiftedCharCode = '}'; break;
 164     case NS_VK_TILDE:               *aUnshiftedCharCode = '~'; break;
 165     case NS_VK_COMMA:               *aUnshiftedCharCode = ','; break;
 166     case NS_VK_PERIOD:              *aUnshiftedCharCode = '.'; break;
 167     case NS_VK_SLASH:               *aUnshiftedCharCode = '/'; break;
 168     case NS_VK_BACK_QUOTE:          *aUnshiftedCharCode = '`'; break;
 169     case NS_VK_OPEN_BRACKET:        *aUnshiftedCharCode = '['; break;
 170     case NS_VK_BACK_SLASH:          *aUnshiftedCharCode = '\\'; break;
 171     case NS_VK_CLOSE_BRACKET:       *aUnshiftedCharCode = ']'; break;
 172     case NS_VK_QUOTE:               *aUnshiftedCharCode = '\''; break;
 173     default:                        *aUnshiftedCharCode = 0; break;
 174   }
 175 }
 176
 177 } // namespace widget
 178 } // namespace mozilla