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jquery.keyboard.extension-navigation.js
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jquery.keyboard.extension-navigation.js
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/*
* jQuery UI Virtual Keyboard Navigation v1.4 for Keyboard v1.18+ only (updated 3/1/2014)
*
* By Rob Garrison (aka Mottie & Fudgey)
* Licensed under the MIT License
*
* Use this extension with the Virtual Keyboard to navigate
* the virtual keyboard keys using the arrow, page, home and end keys
* Using this extension WILL prevent keyboard navigation inside of all
* input and textareas
*
* Requires:
* jQuery
* Keyboard plugin : https://github.com/Mottie/Keyboard
*
* Setup:
* $('.ui-keyboard-input')
* .keyboard(options)
* .addNavigation();
*
* // or if targeting a specific keyboard
* $('#keyboard1')
* .keyboard(options) // keyboard plugin
* .addNavigation(); // this keyboard extension
*
*/
/*jshint browser:true, jquery:true, unused:false */
(function($){
"use strict";
$.keyboard = $.keyboard || {};
$.keyboard.navigationKeys = {
// all keys
toggle : 112, // toggle key; F1 = 112 (event.which value for function 1 key)
enter : 13,
pageup : 33,
pagedown : 34,
end : 35,
home : 36,
left : 37,
up : 38,
right : 39,
down : 40,
caretrt : 45, // Insert key
caretlt : 46 // delete key
};
$.fn.addNavigation = function(options){
return this.each(function(){
// make sure a keyboard is attached
var o, k, base = $(this).data('keyboard'),
defaults = {
position : [0,0], // set start position [row-number, key-index]
toggleMode : false, // true = navigate the virtual keyboard, false = navigate in input/textarea
focusClass : 'hasFocus' // css class added when toggle mode is on
};
if (!base) { return; }
base.navigation_options = o = $.extend({}, defaults, options);
base.navigation_keys = k = $.extend({}, $.keyboard.navigationKeys);
// save navigation settings - disabled when the toggled
base.saveNav = [ base.options.tabNavigation, base.options.enterNavigation ];
base.allNavKeys = $.map(k, function(v,i){ return v; });
// Setup
base.navigation_init = function(){
base.$keyboard.toggleClass(o.focusClass, o.toggleMode)
.find('.ui-keyboard-keyset:visible')
.find('.ui-keyboard-button[data-pos="' + o.position[0] + ',' + o.position[1] + '"]')
.addClass('ui-state-hover');
base.$preview
.unbind('keydown.keyboardNav')
.bind('keydown.keyboardNav',function(e){
return base.checkKeys(e.which);
});
};
base.checkKeys = function(key, disable){
if (typeof(key) === "undefined") {
return;
}
var k = base.navigation_keys;
if (key === k.toggle || disable) {
o.toggleMode = (disable) ? false : !o.toggleMode;
base.options.tabNavigation = (o.toggleMode) ? false : base.saveNav[0];
base.options.enterNavigation = (o.toggleMode) ? false : base.saveNav[1];
}
base.$keyboard.toggleClass(o.focusClass, o.toggleMode);
if ( o.toggleMode && key === k.enter ) {
base.$keyboard
.find('.ui-keyboard-keyset:visible')
.find('.ui-keyboard-button[data-pos="' + o.position[0] + ',' + o.position[1] + '"]')
.trigger('repeater.keyboard');
return false;
}
if ( o.toggleMode && $.inArray(key, base.allNavKeys) >= 0 ) {
base.navigateKeys(key);
return false;
}
};
base.navigateKeys = function(key, row, indx){
indx = indx || o.position[1];
row = row || o.position[0];
var vis = base.$keyboard.find('.ui-keyboard-keyset:visible'),
maxRow = vis.find('.ui-keyboard-button-endrow').length - 1,
maxIndx = vis.find('.ui-keyboard-button[data-pos^="' + row + ',"]').length - 1,
p = base.lastCaret,
l = base.$preview.val().length,
k = base.navigation_keys;
switch(key){
case k.pageup : row = 0; break; // pageUp
case k.pagedown : row = maxRow; break; // pageDown
case k.end : indx = maxIndx; break; // End
case k.home : indx = 0; break; // Home
case k.left : indx += (indx > 0) ? -1 : 0; break; // Left
case k.up : row += (row > 0) ? -1 : 0; break; // Up
case k.right : indx += 1; break; // Right
case k.down : row += (row + 1 > maxRow) ? 0 : 1; break; // Down
case k.caretRt : p.start++; break; // caret right
case k.caretLt : p.start--; break; // caret right
}
// move caret
if (key === k.caretRt || key === k.caretLt) {
p.start = p.start < 0 ? 0 : p.start > l ? l : p.start;
p.end = p.start;
base.lastCaret = p;
base.$preview.focus().caret( p.start, p.start );
}
// get max index of new row
maxIndx = vis.find('.ui-keyboard-button[data-pos^="' + row + ',"]').length - 1;
if (indx > maxIndx) { indx = maxIndx; }
vis.find('.ui-state-hover').removeClass('ui-state-hover');
vis.find('.ui-keyboard-button[data-pos="' + row + ',' + indx + '"]').addClass('ui-state-hover');
o.position = [ row, indx ];
};
// visible event is fired before this extension is initialized, so check!
if (base.options.alwaysOpen && base.isVisible) {
base.$keyboard.find('.ui-state-hover').removeClass('ui-state-hover');
base.navigation_init();
}
// capture and simulate typing
base.$el
.bind('visible.keyboard', function(e){
base.$keyboard.find('.ui-state-hover').removeClass('ui-state-hover');
base.navigation_init();
})
.bind('inactive.keyboard hidden.keyboard', function(e){
base.checkKeys(e.which, true); // disable toggle mode & revert navigation options
})
.bind('navigate navigateTo', function(e, row, indx){
// no row given, check if it's a key name
row = isNaN(row) ? row.toLowerCase() : row;
if (base.navigation_keys.hasOwnProperty(row)) {
base.checkKeys( base.navigation_keys[row] );
} else {
base.navigateKeys(null, row, indx);
}
});
});
};
})(jQuery);