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angular-advanced-searchbox.js
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/*!
* angular-advanced-searchbox
* https://github.com/dnauck/angular-advanced-searchbox
* Copyright (c) 2015 Nauck IT KG http://www.nauck-it.de/
* Author: Daniel Nauck <d.nauck(at)nauck-it.de>
* License: MIT
*/
(function() {
'use strict';
angular.module('angular-advanced-searchbox', [])
.directive('nitAdvancedSearchbox', function() {
return {
restrict: 'E',
scope: {
model: '=ngModel',
parameters: '=',
placeholder: '@'
},
replace: true,
templateUrl: 'angular-advanced-searchbox.html',
controller: [
'$scope', '$attrs', '$element', '$timeout', '$filter',
function ($scope, $attrs, $element, $timeout, $filter) {
$scope.placeholder = $scope.placeholder || 'Search ...';
$scope.searchParams = [];
$scope.searchQuery = '';
$scope.setSearchFocus = false;
var searchThrottleTimer;
var changeBuffer = [];
$scope.$watch('model', function (newValue, oldValue) {
if(angular.equals(newValue, oldValue))
return;
angular.forEach($scope.model, function (value, key) {
if (key === 'query' && $scope.searchQuery !== value) {
$scope.searchQuery = value;
} else {
var paramTemplate = $filter('filter')($scope.parameters, function (param) { return param.key === key; })[0];
var searchParam = $filter('filter')($scope.searchParams, function (param) { return param.key === key; })[0];
if (paramTemplate !== undefined) {
if(searchParam === undefined)
$scope.addSearchParam(paramTemplate, value, false);
else if (searchParam.value !== value )
searchParam.value = value;
}
}
});
// delete not existing search parameters from internal state array
angular.forEach($scope.searchParams, function (value, key){
if (!$scope.model.hasOwnProperty(value.key)){
var index = $scope.searchParams.map(function(e) { return e.key; }).indexOf(value.key);
$scope.removeSearchParam(index);
}
});
}, true);
$scope.searchParamValueChanged = function (param) {
updateModel('change', param.key, param.value);
};
$scope.searchQueryChanged = function (query) {
updateModel('change', 'query', query);
};
$scope.enterEditMode = function(index) {
if (index === undefined)
return;
var searchParam = $scope.searchParams[index];
searchParam.editMode = true;
};
$scope.leaveEditMode = function(index) {
if (index === undefined)
return;
var searchParam = $scope.searchParams[index];
searchParam.editMode = false;
// remove empty search params
if (!searchParam.value)
$scope.removeSearchParam(index);
};
$scope.typeaheadOnSelect = function (item, model, label) {
$scope.addSearchParam(item);
$scope.searchQuery = '';
updateModel('delete', 'query');
};
$scope.isUnsedParameter = function (value, index) {
return $filter('filter')($scope.searchParams, function (param) { return param.key === value.key; }).length === 0;
};
$scope.addSearchParam = function (searchParam, value, enterEditModel) {
if (enterEditModel === undefined)
enterEditModel = true;
if (!$scope.isUnsedParameter(searchParam))
return;
$scope.searchParams.push(
{
key: searchParam.key,
name: searchParam.name,
placeholder: searchParam.placeholder,
value: value || '',
editMode: enterEditModel
}
);
updateModel('add', searchParam.key, value);
};
$scope.removeSearchParam = function (index) {
if (index === undefined)
return;
var searchParam = $scope.searchParams[index];
$scope.searchParams.splice(index, 1);
updateModel('delete', searchParam.key);
};
$scope.removeAll = function() {
$scope.searchParams.length = 0;
$scope.searchQuery = '';
$scope.model = {};
};
$scope.editPrevious = function(currentIndex) {
if (currentIndex !== undefined)
$scope.leaveEditMode(currentIndex);
//TODO: check if index == 0 -> what then?
if (currentIndex > 0) {
$scope.enterEditMode(currentIndex - 1);
} else if ($scope.searchParams.length > 0) {
$scope.enterEditMode($scope.searchParams.length - 1);
}
};
$scope.editNext = function(currentIndex) {
if (currentIndex === undefined)
return;
$scope.leaveEditMode(currentIndex);
//TODO: check if index == array length - 1 -> what then?
if (currentIndex < $scope.searchParams.length - 1) {
$scope.enterEditMode(currentIndex + 1);
} else {
$scope.setSearchFocus = true;
}
};
$scope.keydown = function(e, searchParamIndex) {
var handledKeys = [8, 9, 13, 37, 39];
if (handledKeys.indexOf(e.which) === -1)
return;
var cursorPosition = getCurrentCaretPosition(e.target);
if (e.which == 8) { // backspace
if (cursorPosition === 0)
$scope.editPrevious(searchParamIndex);
} else if (e.which == 9) { // tab
if (e.shiftKey) {
e.preventDefault();
$scope.editPrevious(searchParamIndex);
} else {
e.preventDefault();
$scope.editNext(searchParamIndex);
}
} else if (e.which == 13) { // enter
$scope.editNext(searchParamIndex);
} else if (e.which == 37) { // left
if (cursorPosition === 0)
$scope.editPrevious(searchParamIndex);
} else if (e.which == 39) { // right
if (cursorPosition === e.target.value.length)
$scope.editNext(searchParamIndex);
}
};
function restoreModel() {
angular.forEach($scope.model, function (value, key) {
if (key === 'query') {
$scope.searchQuery = value;
} else {
var searchParam = $filter('filter')($scope.parameters, function (param) { return param.key === key; })[0];
if (searchParam !== undefined)
$scope.addSearchParam(searchParam, value, false);
}
});
}
if ($scope.model === undefined) {
$scope.model = {};
} else {
restoreModel();
}
function updateModel(command, key, value) {
if (searchThrottleTimer)
$timeout.cancel(searchThrottleTimer);
// remove all previous entries to the same search key that was not handled yet
changeBuffer = $filter('filter')(changeBuffer, function (change) { return change.key !== key; });
// add new change to list
changeBuffer.push({
command: command,
key: key,
value: value
});
searchThrottleTimer = $timeout(function () {
angular.forEach(changeBuffer, function (change) {
if(change.command === 'delete')
delete $scope.model[change.key];
else
$scope.model[change.key] = change.value;
});
changeBuffer.length = 0;
}, 500);
}
function getCurrentCaretPosition(input) {
if (!input)
return 0;
// Firefox & co
if (typeof input.selectionStart === 'number') {
return input.selectionDirection === 'backward' ? input.selectionStart : input.selectionEnd;
} else if (document.selection) { // IE
input.focus();
var selection = document.selection.createRange();
var selectionLength = document.selection.createRange().text.length;
selection.moveStart('character', -input.value.length);
return selection.text.length - selectionLength;
}
return 0;
}
}
]
};
})
.directive('nitSetFocus', [
'$timeout', '$parse',
function($timeout, $parse) {
return {
restrict: 'A',
link: function($scope, $element, $attrs) {
var model = $parse($attrs.nitSetFocus);
$scope.$watch(model, function(value) {
if (value === true) {
$timeout(function() {
$element[0].focus();
});
}
});
$element.bind('blur', function() {
$scope.$apply(model.assign($scope, false));
});
}
};
}
])
.directive('nitAutoSizeInput', [
function() {
return {
restrict: 'A',
scope: {
model: '=ngModel'
},
link: function($scope, $element, $attrs) {
var container = angular.element('<div style="position: fixed; top: -9999px; left: 0px;"></div>');
var shadow = angular.element('<span style="white-space:pre;"></span>');
var maxWidth = $element.css('maxWidth') === 'none' ? $element.parent().innerWidth() : $element.css('maxWidth');
$element.css('maxWidth', maxWidth);
angular.forEach([
'fontSize', 'fontFamily', 'fontWeight', 'fontStyle',
'letterSpacing', 'textTransform', 'wordSpacing', 'textIndent',
'boxSizing', 'borderLeftWidth', 'borderRightWidth', 'borderLeftStyle', 'borderRightStyle',
'paddingLeft', 'paddingRight', 'marginLeft', 'marginRight'
], function(css) {
shadow.css(css, $element.css(css));
});
angular.element('body').append(container.append(shadow));
function resize() {
shadow.text($element.val() || $element.attr('placeholder'));
$element.css('width', shadow.outerWidth() + 10);
}
resize();
if ($scope.model) {
$scope.$watch('model', function() { resize(); });
} else {
$element.on('keypress keyup keydown focus input propertychange change', function() { resize(); });
}
}
};
}
]);
})();