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Added forgotten keymanager unit

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Andreas Stöckel 2011-06-14 10:13:47 +00:00
parent e50565ccb4
commit 2e457e4b75
1 changed files with 241 additions and 0 deletions
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phpgwapi/js/egw_action/egw_keymanager.js Normal file
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/**
* eGroupWare egw_action framework - Shortcut/Keyboard input manager
*
* @link http://www.egroupware.org
* @author Andreas Stöckel <as@stylite.de>
* @copyright 2011 by Andreas Stöckel
* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
* @package egw_action
* @version $Id: egw_keymanager.js $
*/
/*
uses egw_action, jquery
*/
/**
* Define the key constants (IE doesn't support "const" keyword)
*/
var EGW_KEY_BACKSPACE = 8;
var EGW_KEY_TAB = 9;
var EGW_KEY_ENTER = 13;
var EGW_KEY_ESCAPE = 27;
var EGW_KEY_DELETE = 46;
var EGW_KEY_SPACE = 32;
var EGW_KEY_PAGE_UP = 33;
var EGW_KEY_PAGE_DOWN = 34;
var EGW_KEY_ARROW_LEFT = 37;
var EGW_KEY_ARROW_UP = 38;
var EGW_KEY_ARROW_RIGHT = 39;
var EGW_KEY_ARROW_DOWN = 40;
var EGW_KEY_0 = 48;
var EGW_KEY_1 = 49;
var EGW_KEY_2 = 50;
var EGW_KEY_3 = 51;
var EGW_KEY_4 = 52;
var EGW_KEY_5 = 53;
var EGW_KEY_6 = 54;
var EGW_KEY_7 = 55;
var EGW_KEY_8 = 56;
var EGW_KEY_9 = 57;
var EGW_KEY_A = 65;
var EGW_KEY_B = 66;
var EGW_KEY_C = 67;
var EGW_KEY_D = 68;
var EGW_KEY_E = 69;
var EGW_KEY_F = 70;
var EGW_KEY_G = 71;
var EGW_KEY_H = 72;
var EGW_KEY_I = 73;
var EGW_KEY_J = 74;
var EGW_KEY_K = 75;
var EGW_KEY_L = 76;
var EGW_KEY_M = 77;
var EGW_KEY_N = 78;
var EGW_KEY_O = 79;
var EGW_KEY_P = 80;
var EGW_KEY_Q = 81;
var EGW_KEY_R = 82;
var EGW_KEY_S = 83;
var EGW_KEY_T = 84;
var EGW_KEY_U = 85;
var EGW_KEY_V = 86;
var EGW_KEY_W = 87;
var EGW_KEY_X = 88;
var EGW_KEY_Y = 89;
var EGW_KEY_Z = 90;
var EGW_KEY_F1 = 112;
var EGW_KEY_F2 = 113;
var EGW_KEY_F3 = 114;
var EGW_KEY_F4 = 115;
var EGW_KEY_F5 = 116;
var EGW_KEY_F6 = 117;
var EGW_KEY_F7 = 118;
var EGW_KEY_F8 = 119;
var EGW_KEY_F9 = 120;
var EGW_KEY_F10 = 121;
var EGW_KEY_F11 = 122;
var EGW_KEY_F12 = 123;
var EGW_VALID_KEYS = [
8, 9, 13, 27, 46, 32, 33, 34, 37, 38, 39, 40, 48, 49, 50, 51, 52, 53, 54,
55, 56, 57, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80,
81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 112, 113, 114, 115, 116, 117, 118,
119, 120, 121, 122, 123
]
/**
* The tranlation function converts the given native key code into one of the
* egw key constants as listed above. This key codes were chosen to match the
* key codes of IE and FF.
*/
var egw_keycode_translation_function = function(_nativeKeyCode) {
// Map the numpad to the 0..9 keys
if (_nativeKeyCode >= 96 && _nativeKeyCode <= 105)
{
_nativeKeyCode -= 48
}
return _nativeKeyCode;
}
/**
* Checks whether the given keycode is in the list of valid key codes. If not,
* returns -1.
*/
function egw_keycode_makeValid(_keyCode) {
var idx = EGW_VALID_KEYS.indexOf(_keyCode);
if (idx >= 0) {
return _keyCode;
}
return -1;
}
/**
* Register the onkeypress handler on the document
*/
$(document).ready(function() {
// Fetch the key down event and translate it into browser-independent and
// easy to use key codes and shift states
$(document).keydown( function(e) {
// Translate the given key code and make it valid
var keyCode = e.which;
keyCode = egw_keycode_translation_function(keyCode);
keyCode = egw_keycode_makeValid(keyCode);
// Only go on if this is a valid key code - call the key handler
if (keyCode != -1)
{
if (egw_keyHandler(keyCode, e.shiftKey, e.ctrlKey || e.metaKey, e.altKey))
{
// If the key handler successfully passed the key event to some
// sub component, prevent the default action
e.preventDefault();
}
}
});
});
/**
* Creates the shortcut structure
*/
function egw_shortcutIdx(_keyCode, _shift, _ctrl, _alt)
{
return "_" + _keyCode + "_" +
(_shift ? "S" : "") +
(_ctrl ? "C" : "") +
(_alt ? "A" : "");
}
var egw_registeredShortcuts = {}
/**
* Registers a global shortcut. If the shortcut already exists, it is overwritten.
* @param int _keyCode is one of the keycode constants
* @param bool _shift whether shift has to be set
* @param bool _ctrl whether ctrl has to be set
* @param bool _alt whether alt has to be set
* @param function _handler the function which will be called when the shortcut
* is evoked. An object containing the shortcut data will be passed as first
* parameter.
* @param object _context is the context in which the function will be executed
*/
function egw_registerGlobalShortcut(_keyCode, _shift, _ctrl, _alt, _handler, _context)
{
// Generate the hash map index for the shortcut
var idx = egw_shortcutIdx(_keyCode, _shift, _ctrl, _alt);
// Register the shortcut
egw_registeredShortcuts[idx] = {
"handler": _handler,
"context": _context,
"shortcut": {
"keyCode": _keyCode,
"shift": _shift,
"ctrl": _ctrl,
"alt": _alt
}
}
}
/**
* Unregisters the given shortcut.
*/
function egw_unregisterGlobalShortcut(_keyCode, _shift, _ctrl, _alt) {
// Generate the hash map index for the shortcut
var idx = egw_shortcutIdx(_keyCode, _shift, _ctrl, _alt);
// Delete the entry from the hash map
delete egw_registeredShortcuts[idx];
}
/**
* the egw_keyHandler function handles various key presses. The boolean
* _shift, _ctrl, _alt values have been translated into platform independent
* values (for apple devices).
*/
function egw_keyHandler(_keyCode, _shift, _ctrl, _alt) {
// Check whether there is a global shortcut waiting for the keypress event
var idx = egw_shortcutIdx(_keyCode, _shift, _ctrl, _alt);
if (typeof egw_registeredShortcuts[idx] != "undefined")
{
var shortcut = egw_registeredShortcuts[idx];
// Call the registered shortcut function and return its result.
shortcut.handler.call(shortcut.context, shortcut.shortcut);
return true;
}
else
{
// Pass the keypress to the currently focused action object
// Get the object manager and fetch the container of the currently
// focused object
var focusedObject = egw_getObjectManager().getFocusedObject();
if (focusedObject)
{
var cntr = focusedObject.getContainerRoot();
if (cntr)
{
return cntr.handleKeyPress(_keyCode, _shift, _ctrl, _alt);
}
}
}
return false;
}