angular-on-screen-keyboard-directive.js
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angular.module('onScreenKeyboard', ['ngSanitize'])
.directive('onScreenKeyboard', ['$timeout', '$document', function($timeout, $document) {
return {
restrict: 'E',
bindToController: true,
controllerAs: 'ctrl',
scope: {
rows : '=?',
uppercaseAllWords : '@',
alfanumeric : '=?',
numeric : '=?'
},
controller: ['$sce', '$scope', function($sce, $scope) {
var ctrl = this;
if (!ctrl.rows) {
ctrl.rows = [
['1', '2', '3','4','5','6','7','8', '9', '0', {
type: 'erase', colspan: 2, text: '⇐'
}],
['q','w','e','r','t','y','u','i','o','p','@'],
['a','s','d','f','g','h','j','k','l','-','_', {type: 'margin'}],
[
{type: 'shift', upperCase: '⇓', lowerCase: '⇑'},
'z', 'x', 'c', 'v', 'b', 'n', 'm', ',', '.',
{type: 'shift', upperCase: '⇓', lowerCase: '⇑'}
],
[{type: 'margin'}, {type: 'space', colspan: 9, text: ' '}]
];
}
ctrl.getText = function(key) {
if (key.type === 'margin')
return '';
var val = '';
if (key.text)
val = key.text;
else if (key.lowerCase && !ctrl.isUpperCase)
val = key.lowerCase;
else if (key.upperCase && ctrl.isUpperCase)
val = key.upperCase;
else {
val = ctrl.isUpperCase ? key.toUpperCase() : key.toLowerCase();
}
if (val && val.indexOf('&') > -1)
return $sce.trustAsHtml(val);
return val;
};
$scope.fondo = function() {
$timeout(function() {
ctrl.lastInputCtrl.focus();
$scope.$emit('focus');
});
};
}],
link: function(scope, element, attr) {
var ctrl = scope.ctrl;
ctrl.isUpperCase = false;
ctrl.lastInputCtrl = null;
ctrl.startPos = null;
ctrl.endPos = null;
ctrl.printKeyStroke = function(key, event) {
if (!ctrl.lastInputCtrl)
return;
ctrl.startPos = ctrl.lastInputCtrl.selectionStart;
ctrl.endPos = ctrl.lastInputCtrl.selectionEnd;
if (key.type === 'erase') {
ctrl.eraseKeyStroke();
return;
} else if (key.type === 'shift') {
ctrl.isUpperCase = !ctrl.isUpperCase;
return;
}
var htmlKeyVal = angular.element(event.target || event.srcElement).text();
var lastInputCtrl = angular.element(ctrl.lastInputCtrl);
var val = lastInputCtrl.val();
var pre = val.substring(0, ctrl.startPos);
var post = val.substring(ctrl.endPos, val.length);
lastInputCtrl.val(pre + htmlKeyVal + post);
lastInputCtrl.triggerHandler('change');
ctrl.startPos += htmlKeyVal.length;
ctrl.endPos += htmlKeyVal.length;
ctrl.lastInputCtrl.selectionStart = ctrl.startPos;
ctrl.lastInputCtrl.selectionEnd = ctrl.startPos;
ctrl.setKeyboardLayout();
ctrl.refocus();
};
ctrl.refocus = function() {
ctrl.lastInputCtrl.focus();
};
ctrl.eraseKeyStroke = function() {
if (!ctrl.lastInputCtrl)
return;
var hasSel = ctrl.startPos !== ctrl.endPos;
var lastInputCtrl = angular.element(ctrl.lastInputCtrl);
var val = lastInputCtrl.val();
var pre = val.substring(0, hasSel ? ctrl.startPos : ctrl.startPos - 1);
var post = val.substring(ctrl.endPos, val.length);
lastInputCtrl.val(pre + post);
lastInputCtrl.triggerHandler('change');
if (hasSel) {
ctrl.endPos = ctrl.startPos;
}
else {
ctrl.startPos--;
ctrl.endPos--;
}
ctrl.lastInputCtrl.selectionStart = ctrl.startPos;
ctrl.lastInputCtrl.selectionEnd = ctrl.startPos;
ctrl.setKeyboardLayout();
ctrl.refocus();
};
ctrl.setKeyboardLayout = function() {
if (!ctrl.lastInputCtrl) {
ctrl.isUpperCase = true;
return;
}
else if (ctrl.lastInputCtrl.className && ctrl.isUpperCase)
ctrl.isUpperCase = true;
else if (angular.element(ctrl.lastInputCtrl).val().length === 0) {
ctrl.isUpperCase = true;
}
else if (
angular.element(ctrl.lastInputCtrl).val().slice(-1) === ' ' &&
!ctrl.isUpperCase && attr.uppercaseAllWords !== undefined
)
ctrl.isUpperCase = true;
else{
ctrl.isUpperCase = true;
}
};
var focusin = function(event) {
var e = event.target || event.srcElement;
if (e.tagName === 'INPUT' || e.tagName === 'TEXTAREA') {
ctrl.lastInputCtrl = e;
ctrl.setKeyboardLayout();
}
};
var keyup = function() {
if (!ctrl.lastInputCtrl) {
return;
}
ctrl.startPos = ctrl.lastInputCtrl.selectionStart;
ctrl.endPos = ctrl.lastInputCtrl.selectionEnd;
ctrl.setKeyboardLayout();
scope.$digest();
};
$document.bind('focusin', focusin);
$document.bind('keyup', keyup);
scope.$on("$destroy", function() {
$document.unbind('focusin', focusin);
$document.unbind('keyup', keyup);
});
element.bind('contextmenu', function(event) {
event.preventDefault();
return false;
});
$timeout(function() {
ctrl.isUpperCase = true;
},0);
},
templateUrl: 'src/views/angular-on-screen-keyboard.html'
};
}]);