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ng.module('smart-table')
.controller('stTableController', ['$scope', '$parse', '$filter', '$attrs', function StTableController ($scope, $parse, $filter, $attrs) {
var propertyName = $attrs.stTable;
var displayGetter = $parse(propertyName);
var displaySetter = displayGetter.assign;
var safeGetter;
var orderBy = $filter('orderBy');
var filter = $filter('filter');
var safeCopy = copyRefs(displayGetter($scope));
var tableState = {
sort: {},
search: {},
pagination: {
start: 0,
totalItemCount: 0
}
};
var filtered;
var pipeAfterSafeCopy = true;
var ctrl = this;
var lastSelected;
function copyRefs (src) {
return src ? [].concat(src) : [];
}
function updateSafeCopy () {
safeCopy = copyRefs(safeGetter($scope));
if (pipeAfterSafeCopy === true) {
ctrl.pipe();
}
}
function deepDelete (object, path) {
if (path.indexOf('.') != -1) {
var partials = path.split('.');
var key = partials.pop();
var parentPath = partials.join('.');
var parentObject = $parse(parentPath)(object)
delete parentObject[key];
if (Object.keys(parentObject).length == 0) {
deepDelete(object, parentPath);
}
} else {
delete object[path];
}
}
if ($attrs.stSafeSrc) {
safeGetter = $parse($attrs.stSafeSrc);
$scope.$watch(function () {
var safeSrc = safeGetter($scope);
return safeSrc && safeSrc.length ? safeSrc[0] : undefined;
}, function (newValue, oldValue) {
if (newValue !== oldValue) {
updateSafeCopy();
}
});
$scope.$watch(function () {
var safeSrc = safeGetter($scope);
return safeSrc ? safeSrc.length : 0;
}, function (newValue, oldValue) {
if (newValue !== safeCopy.length) {
updateSafeCopy();
}
});
$scope.$watch(function () {
return safeGetter($scope);
}, function (newValue, oldValue) {
if (newValue !== oldValue) {
tableState.pagination.start = 0;
updateSafeCopy();
}
});
}
/**
* sort the rows
* @param {Function | String} predicate - function or string which will be used as predicate for the sorting
* @param [reverse] - if you want to reverse the order
*/
this.sortBy = function sortBy (predicate, reverse) {
tableState.sort.predicate = predicate;
tableState.sort.reverse = reverse === true;
if (ng.isFunction(predicate)) {
tableState.sort.functionName = predicate.name;
} else {
delete tableState.sort.functionName;
}
tableState.pagination.start = 0;
return this.pipe();
};
/**
* search matching rows
* @param {String} input - the input string
* @param {String} [predicate] - the property name against you want to check the match, otherwise it will search on all properties
*/
this.search = function search (input, predicate) {
var predicateObject = tableState.search.predicateObject || {};
var prop = predicate ? predicate : '$';
input = ng.isString(input) ? input.trim() : input;
$parse(prop).assign(predicateObject, input);
// to avoid to filter out null value
if (!input) {
deepDelete(predicateObject, prop);
}
tableState.search.predicateObject = predicateObject;
tableState.pagination.start = 0;
return this.pipe();
};
/**
* this will chain the operations of sorting and filtering based on the current table state (sort options, filtering, ect)
*/
this.pipe = function pipe () {
var pagination = tableState.pagination;
var output;
filtered = tableState.search.predicateObject ? filter(safeCopy, tableState.search.predicateObject) : safeCopy;
if (tableState.sort.predicate) {
filtered = orderBy(filtered, tableState.sort.predicate, tableState.sort.reverse);
}
pagination.totalItemCount = filtered.length;
if (pagination.number !== undefined) {
pagination.numberOfPages = filtered.length > 0 ? Math.ceil(filtered.length / pagination.number) : 1;
pagination.start = pagination.start >= filtered.length ? (pagination.numberOfPages - 1) * pagination.number : pagination.start;
output = filtered.slice(pagination.start, pagination.start + parseInt(pagination.number));
}
displaySetter($scope, output || filtered);
};
/**
* select a dataRow (it will add the attribute isSelected to the row object)
* @param {Object} row - the row to select
* @param {String} [mode] - "single" or "multiple" (multiple by default)
*/
this.select = function select (row, mode) {
var rows = copyRefs(displayGetter($scope));
var index = rows.indexOf(row);
if (index !== -1) {
if (mode === 'single') {
row.isSelected = row.isSelected !== true;
if (lastSelected) {
lastSelected.isSelected = false;
}
lastSelected = row.isSelected === true ? row : undefined;
} else {
rows[index].isSelected = !rows[index].isSelected;
}
}
};
/**
* take a slice of the current sorted/filtered collection (pagination)
*
* @param {Number} start - start index of the slice
* @param {Number} number - the number of item in the slice
*/
this.slice = function splice (start, number) {
tableState.pagination.start = start;
tableState.pagination.number = number;
return this.pipe();
};
/**
* return the current state of the table
* @returns {{sort: {}, search: {}, pagination: {start: number}}}
*/
this.tableState = function getTableState () {
return tableState;
};
this.getFilteredCollection = function getFilteredCollection () {
return filtered || safeCopy;
};
/**
* Use a different filter function than the angular FilterFilter
* @param filterName the name under which the custom filter is registered
*/
this.setFilterFunction = function setFilterFunction (filterName) {
filter = $filter(filterName);
};
/**
* Use a different function than the angular orderBy
* @param sortFunctionName the name under which the custom order function is registered
*/
this.setSortFunction = function setSortFunction (sortFunctionName) {
orderBy = $filter(sortFunctionName);
};
/**
* Usually when the safe copy is updated the pipe function is called.
* Calling this method will prevent it, which is something required when using a custom pipe function
*/
this.preventPipeOnWatch = function preventPipe () {
pipeAfterSafeCopy = false;
};
}])
.directive('stTable', function () {
return {
restrict: 'A',
controller: 'stTableController',
link: function (scope, element, attr, ctrl) {
if (attr.stSetFilter) {
ctrl.setFilterFunction(attr.stSetFilter);
}
if (attr.stSetSort) {
ctrl.setSortFunction(attr.stSetSort);
}
}
};
});
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