I am implementing a custom solution that will initialize kendoGrid (and its multiselect columns) by applying filters to the grid using query string parameters. I am using Kendo UI v2014.2.903 and multiselectbox user extension.
To achieve this, I have a custom JavaScript function that parses query string parameters into filter object and applies it to kendoGrid's dataSource property using its filter method. Code snippet below:
var preFilterQueryString = getPreFilterQuery(queryString);
if (preFilterQueryString != '') {
kendoGrid.dataSource.filter(parseFilterString(preFilterQueryString));
}
I am initializing multiselectbox as follows:
args.element.kendoMultiSelectBox({
dataSource: getAutoCompleteDataSource(column.field),
valuePrimitive: true,
selectionChanged: function (e) {
//ignored for brevity
}
});
My problem is if I set filters to multiselectbox using above approach, they are not applied correctly to the data set.
For example, if I pass single filter as "Vancouver", correct result set is displayed. Choices in the multiselectbox are "All" and "Vancouver". However, Vancouver choice is not checked in the multiselectbox. Is that by design? Please see image below.
single filter image
If I pass in two filters Vancouver and Warsaw, only the last filter Warsaw is applied to the grid and data set containing only Warsaw is displayed. Again, none of the choices are checked in the multiselectbox.
two filters image
Below is the filter object that is applied to dataSource.filter() method.
kendoGrid's filter object image
Troubleshooting
Below is condensed version (for brevity) of selectionchanged event handler of a multiselectbox column.
if (e.newValue && e.newValue.length) {
var newValue = e.newValue;
console.log('e.newValue: ' + e.newValue);
filter.filters = [];
for (var i = 0, l = newValue.length; i < l; i++) {
filter.filters.push({field: field,operator: 'contains',value: newValue[i]});
}
kendoGrid.dataSource.filter(allFilters);
}
I noticed that when two filters are passed, e.newValue is "Warsaw" instead of an array - "[Vancouver, Warsaw]"
I spent lot of time troubleshooting why only Warsaw is applied to the data set.
Here's what I found out:
_raiseSelectionChanged function is what raises selection changed event. In that function, I noticed that it sets newValue and oldValue event arguments. To set newValue it uses "Value" function. Value function uses the below code to retrieve all the selected list items and return them.
else {
var selecteditems = this._getSelectedListItems();
return $.map(selecteditems, function (item) {
var obj = $(item).children("span").first();
return obj.attr("data-value");
}).join();
}
_getSelectedListItems function uses jQuery filter to fetch all list items that have css class ".selected"
_getSelectedListItems: function () {
return this._getAllValueListItems().filter("." + SELECTED);
},
There's a _select event which seems to be adding ".selected" class to list items. When I put a breakpoint on line 286, it is hitting it only once and that is for Warsaw. I am unable to understand why it is not getting called for Vancouver. I am out of clues and was wondering if anyone has pointers.
debug capture of _select function
Below is kendoMultiSelectBox user extension for your reference:
//MultiSelect - A user extension of KendoUI DropDownList widget.
(function ($) {
// shorten references to variables
var kendo = window.kendo,
ui = kendo.ui,
DropDownList = ui.DropDownList,
keys = kendo.keys,
SELECT = "select",
SELECTIONCHANGED = "selectionChanged",
SELECTED = "k-state-selected",
HIGHLIGHTED = "k-state-active",
CHECKBOX = "custom-multiselect-check-item",
SELECTALLITEM = "custom-multiselect-selectAll-item",
MULTISELECTPOPUP = "custom-multiselect-popup",
EMPTYSELECTION = "custom-multiselect-summary-empty";
var lineTemplate = '<input type="checkbox" name="#= {1} #" value="#= {0} #" class="' + CHECKBOX + '" />' +
'<span data-value="#= {0} #">#= {1} #</span>';
var MultiSelectBox = DropDownList.extend({
init: function (element, options) {
options.template = kendo.template(kendo.format(lineTemplate, options.dataValueField || 'data', options.dataTextField || 'data'));
// base call to widget initialization
DropDownList.fn.init.call(this, element, options);
var button = $('<input type="button" value="OK" style="float: right; padding: 3px; margin: 5px; cursor: pointer;" />');
button.on('click', $.proxy(this.close, this));
var popup = $(this.popup.element);
popup.append(button);
},
options: {
name: "MultiSelectBox",
index: -1,
showSelectAll: true,
preSummaryCount: 1, // number of items to show before summarising
emptySelectionLabel: '', // what to show when no items are selected
selectionChanged: null // provide callback to invoke when selection has changed
},
events: [
SELECTIONCHANGED
],
refresh: function () {
// base call
DropDownList.fn.refresh.call(this);
this._updateSummary();
$(this.popup.element).addClass(MULTISELECTPOPUP);
},
current: function (candidate) {
return this._current;
},
open: function () {
var self = this;
this._removeSelectAllItem();
this._addSelectAllItem();
if ($(this.ul).find('li').length > 6) {
$(this.popup.element).css({ 'padding-bottom': '30px' });
}
else {
$(this.popup.element).css({ 'padding-bottom': '0' });
}
DropDownList.fn.open.call(this);
//hook on to popup event because dropdown close does not
//fire consistently when user clicks on some other elements
//like a dataviz chart graphic
this.popup.one('close', $.proxy(this._onPopupClosed, this));
},
_onPopupClosed: function () {
this._removeSelectAllItem();
this._current = null;
this._raiseSelectionChanged();
},
_raiseSelectionChanged: function () {
var currentValue = this.value();
var currentValues = $.map((currentValue.length > 0 ? currentValue.split(",") : []).sort(), function (item) { return item.toString(); });
var oldValues = $.map((this._oldValue || []).sort(), function (item) { return item ? item.toString() : ''; });
// store for next pass
this._oldValue = $.map(currentValues, function (item) { return item.toString(); });
var changedArgs = { newValue: currentValues, oldValue: oldValues };
if (oldValues) {
var hasChanged = ($(oldValues).not(currentValues).length == 0 && $(currentValues).not(oldValues).length == 0) !== true;
if (hasChanged) {
//if (this.options.selectionChanged)
// this.options.selectionChanged(changedArgs);
this.trigger(SELECTIONCHANGED, changedArgs);
}
}
else if (currentValue.length > 0) {
//if (this.options.selectionChanged)
// this.options.selectionChanged(changedArgs);
this.trigger(SELECTIONCHANGED, changedArgs);
}
},
_addSelectAllItem: function () {
if (!this.options.showSelectAll) return;
var firstListItem = this.ul.children('li:first');
if (firstListItem.length > 0) {
this.selectAllListItem = $('<li tabindex="-1" role="option" unselectable="on" class="k-item ' + SELECTALLITEM + '"></li>').insertBefore(firstListItem);
// fake a data object to use for the template binding below
var selectAllData = {};
selectAllData[this.options.dataValueField || 'data'] = '*';
selectAllData[this.options.dataTextField || 'data'] = 'All';
this.selectAllListItem.html(this.options.template(selectAllData));
this._updateSelectAllItem();
this._makeUnselectable(); // required for IE8
}
},
_removeSelectAllItem: function () {
if (this.selectAllListItem) {
this.selectAllListItem.remove();
}
this.selectAllListItem = null;
},
_focus: function (li) {
if (this.popup.visible() && li && this.trigger(SELECT, { item: li })) {
this.close();
return;
}
this.select(li);
},
_keydown: function (e) {
// currently ignore Home and End keys
// can be added later
if (e.keyCode == kendo.keys.HOME ||
e.keyCode == kendo.keys.END) {
e.preventDefault();
return;
}
DropDownList.fn._keydown.call(this, e);
},
_keypress: function (e) {
// disable existing function
},
_move: function (e) {
var that = this,
key = e.keyCode,
ul = that.ul[0],
down = key === keys.DOWN,
pressed;
if (key === keys.UP || down) {
if (down) {
if (!that.popup.visible()) {
that.toggle(down);
}
if (!that._current) {
that._current = ul.firstChild;
} else {
that._current = ($(that._current)[0].nextSibling || that._current);
}
} else {
//up
// only if anything is highlighted
if (that._current) {
that._current = ($(that._current)[0].previousSibling || ul.firstChild);
}
}
if (that._current) {
that._scroll(that._current);
}
that._highlightCurrent();
e.preventDefault();
pressed = true;
} else {
pressed = DropDownList.fn._move.call(this, e);
}
return pressed;
},
selectAll: function () {
var unselectedItems = this._getUnselectedListItems();
this._selectItems(unselectedItems);
// todo: raise custom event
},
unselectAll: function () {
var selectedItems = this._getSelectedListItems();
this._selectItems(selectedItems); // will invert the selection
// todo: raise custom event
},
_selectItems: function (listItems) {
var that = this;
$.each(listItems, function (i, item) {
var idx = ui.List.inArray(item, that.ul[0]);
that.select(idx); // select OR unselect
});
},
_selectItem: function () {
// method override to prevent default selection of first item, done by normal dropdown
var that = this,
options = that.options,
useOptionIndex,
value;
useOptionIndex = that._isSelect && !that._initial && !options.value && options.index && !that._bound;
if (!useOptionIndex) {
value = that._selectedValue || options.value || that._accessor();
}
if (value) {
that.value(value);
} else if (that._bound === undefined) {
that.select(options.index);
}
},
_select: function (li) {
var that = this,
value,
text,
idx;
li = that._get(li);
if (li && li[0]) {
idx = ui.List.inArray(li[0], that.ul[0]);
if (idx > -1) {
if (li.hasClass(SELECTED)) {
li.removeClass(SELECTED);
that._uncheckItem(li);
if (this.selectAllListItem && li[0] === this.selectAllListItem[0]) {
this.unselectAll();
}
} else {
li.addClass(SELECTED);
that._checkItem(li);
if (this.selectAllListItem && li[0] === this.selectAllListItem[0]) {
this.selectAll();
}
}
if (this._open) {
that._current(li);
that._highlightCurrent();
}
var selecteditems = this._getSelectedListItems();
value = [];
text = [];
$.each(selecteditems, function (indx, item) {
var obj = $(item).children("span").first();
value.push(obj.attr("data-value"));
text.push(obj.text());
});
that._updateSummary(text);
that._updateSelectAllItem();
that._accessor(value, idx);
// todo: raise change event (add support for selectedIndex) if required
that._raiseSelectionChanged();
}
}
},
_getAllValueListItems: function () {
if (this.selectAllListItem) {
return this.ul.children("li").not(this.selectAllListItem[0]);
} else {
return this.ul.children("li");
}
},
_getSelectedListItems: function () {
return this._getAllValueListItems().filter("." + SELECTED);
},
_getUnselectedListItems: function () {
return this._getAllValueListItems().filter(":not(." + SELECTED + ")");
},
_getSelectedItemsText: function () {
var text = [];
var selecteditems = this._getSelectedListItems();
$.each(selecteditems, function (indx, item) {
var obj = $(item).children("span").first();
text.push(obj.text());
});
return text;
},
_updateSelectAllItem: function () {
if (!this.selectAllListItem) return;
// are all items selected?
if (this._getAllValueListItems().length == this._getSelectedListItems().length) {
this._checkItem(this.selectAllListItem);
this.selectAllListItem.addClass(SELECTED);
}
else {
this._uncheckItem(this.selectAllListItem);
this.selectAllListItem.removeClass(SELECTED);
}
},
_updateSummary: function (itemsText) {
if (!itemsText) {
itemsText = this._getSelectedItemsText();
}
if (itemsText.length == 0) {
this._inputWrapper.addClass(EMPTYSELECTION);
this.text(this.options.emptySelectionLabel);
return;
} else {
this._inputWrapper.removeClass(EMPTYSELECTION);
}
if (itemsText.length <= this.options.preSummaryCount) {
this._textAccessor(itemsText.join(", "));
}
else {
this._textAccessor(itemsText.length + ' selected');
}
},
_checkItem: function (itemContainer) {
if (!itemContainer) return;
itemContainer.children("input").prop("checked", true);
},
_uncheckItem: function (itemContainer) {
if (!itemContainer) return;
itemContainer.children("input").removeAttr("checked");
},
_isItemChecked: function (itemContainer) {
return itemContainer.children("input:checked").length > 0;
},
value: function (value) {
if(value != undefined)
console.log("value", value);
var that = this,
idx,
valuesList = [];
if (value !== undefined) {
if (!$.isArray(value)) {
valuesList.push(value);
this._oldValue = valuesList; // to allow for selectionChanged event
}
else {
valuesList = value;
this._oldValue = value; // to allow for selectionChanged event
}
// clear all selections first
$(that.ul[0]).children("li").removeClass(SELECTED);
$("input", that.ul[0]).removeAttr("checked");
$.each(valuesList, function (indx, item) {
var hasValue;
if (item !== null) {
item = item.toString();
}
that._selectedValue = item;
hasValue = value || (that.options.optionLabel && !that.element[0].disabled && value === "");
if (hasValue && that._fetchItems(value)) {
return;
}
idx = that._index(item);
if (idx > -1) {
that.select(
that.options.showSelectAll ? idx + 1 : idx
);
}
});
that._updateSummary();
}
else {
var selecteditems = this._getSelectedListItems();
return $.map(selecteditems, function (item) {
var obj = $(item).children("span").first();
return obj.attr("data-value");
}).join();
}
},
});
ui.plugin(MultiSelectBox);
})(jQuery);
UPDATE
I came across documentation for multiselectbox's select event that clearly states that the select event is not fired when an item is selected programmatically. Is it relevant to what I am trying to do? But why is it firing for one of the filters even though I am setting them programmatically?
enter link description here
I have a doubt in the mentioned Title. I can get current latitude and longitude. But when i am using reverse geoCoding to convert to corresponding city name or address, nothing shows. Does anybody have any idea about this ?. Here is my code
Titanium.Geolocation.getCurrentPosition(function(e) {
if (!e.success || e.error) {
alert('Could not find the device location');
return;
} else {
longitude = e.coords.longitude;
latitude = e.coords.latitude;
Titanium.Geolocation.reverseGeocoder(latitude, longitude, function(e) {
if (e.success) {
var places = e.places;
if (places && places.length) {
driverCity = places[0].city;
// Current city
driverState = places[0].address;
// Current State
annotation.title = e.places[0].displayAddress;
// Whole address
// Ti.API.info("\nReverse Geocode address == " + JSON.stringify(places));
} else {
// address = "No address found";
}
}
});
}
});
I would suggest firstly using different variables for your return parameters in the functions and use negative conditions to reduce indentation:
Titanium.Geolocation.getCurrentPosition(function(position) {
if (!position.success || position.error) {
alert('Could not find the device location');
return;
}
longitude = position.coords.longitude; // -88.0747875
latitude = position.coords.latitude; // 41.801141
Titanium.Geolocation.reverseGeocoder(latitude, longitude, function(result) {
if (!result.success || !result.places || result.places.length == 0) {
alert('Could not find any places.');
return;
}
var places = result.places;
Ti.API.info("\nReverse Geocode address == " + JSON.stringify(places));
driverCity = places[0].city;
// Current city
driverState = places[0].address;
// Current State
annotation.title = places[0].displayAddress;
// Whole address
// Ti.API.info("\nReverse Geocode address == " + JSON.stringify(places));
});
});
Then see what is being returned from your calls.
I have custom code to create a nearby search of places on google map.
Each search type creates a new layer, removed when selecting a different search type, my problem is, even thought he layer is removed, here in Thailand we have "Google partners advertising" show dependant on the search type and this "Layer" doesnt get removed, but added to when creating a new search layer.
This is the code I use to create the search (in part):
Creating a layer (Google):
<div id="map_layers_google">
<input type="checkbox" name="map_google" id="map_google_restaurant" class="box" onclick="Propertywise.Maps.getDataWithinBounds('google_restaurant');" value="google_restaurant">
</div>
getDataWithinBounds: function(layer_name, except_this_area) {
if (!Propertywise.Design.is_ie8_or_less) {
this.layers_on_map[layer_name] = true;
this.getEntitiesWithinBounds(layer_name);
}
getEntitiesWithinBounds: function(entity_name) {
var $this = this;
if (!this.getBounds()) {
setTimeout(function() {
$this.getEntitiesWithinBounds(entity_name);
}, 20);
} else {
var layer_name, category;
var $this_input_el = jQuery("#map_" + entity_name);
jQuery("#map_updating").fadeIn('fast');
if (entity_name.indexOf('google') != -1) {
layer_name = "google";
category = entity_name.replace("google_", "");
} else if (entity_name.indexOf('school') != -1) {
layer_name = "schools";
category = entity_name.replace("schools_", "");
} else if (entity_name.indexOf('events') != -1) {
layer_name = "events";
category = entity_name.replace("events_", "");
} else {
layer_name = "transport";
this.toggleTransitLayer();
}
jQuery("#map_layers_" + layer_name + " input").each(function(index, value) {
var el_id = jQuery(this).attr("id");
var el_entity_name = el_id.replace("map_", "");
Propertywise.Maps.layers_on_map[el_entity_name] = false;
if (jQuery(this).is(":checked") && el_entity_name != entity_name) {
jQuery(this).attr("checked", false);
}
if (jQuery(this).is(":checked") && el_entity_name == entity_name) {
Propertywise.Maps.layers_on_map[entity_name] = true;
}
});
if (jQuery("#map_" + entity_name).is(':checked') || Propertywise.this_page == "school") {
if (layer_name == "google") {
infoWindow = new google.maps.InfoWindow();
Propertywise.Maps.removeMarkers(layer_name);
var request = {
bounds: Propertywise.Maps.map.getBounds(),
types: [category]
};
service = new google.maps.places.PlacesService(Propertywise.Maps.map);
service.radarSearch(request, function(results, status) {
jQuery("#map_updating").fadeOut('fast');
if (status != google.maps.places.PlacesServiceStatus.OK) {
return;
}
for (var i = 0, result; result = results[i]; i++) {
Propertywise.Maps.createMarker(result.geometry.location.lat(), result.geometry.location.lng(), {
place: result,
type: category
});
}
});
}
} else {
this.removeMarkers(layer_name);
jQuery("#map_updating").fadeOut('fast');
}
}
}
And this is the setup and remove each layer:
setUpLayers: function() {
var $this = this;
jQuery.each(this.layers, function(layer_name, value) {
Propertywise.Ajax.requests[layer_name] = [];
$this.layers[layer_name] = [];
});
},
removeMarkers: function(layer_name) {
if (Propertywise.Maps.map) {
var layer = this.layers[layer_name];
for (var i = 0; i < layer.length; i++) {
layer[i].setMap(null);
}
layer = [];
}
}
Here is link to screen shot of the problem.
screenshot
Question is, can anyone help with either changing the above to remove the complete layer(not just marker layer) or advise how to remove the advertising.. I understand this is part of terms of Google to display, but its unprofessional and looks terrible.
Best
Malisa
Using Google Maps' API v3, how can I geocode a city name, and have a map returned with the outline of the result? usually this is a political entity with strict boundaries, like a city, municipality, etc.
Which API method should be used?
There isn't any API (at present) that provides that data.
Enhancement request
I think you will need Tiger/Line files as referenced in this answer. You can use the data to generate polygons. Use Geocoder.geocode to search for city names. Here's a promise based function that I use:
function locateAddress(address) {
var deferred = $q.defer();
if(!address) { $q.resolve(null); return; }
var geocoder = new google.maps.Geocoder();
var a = address;
if(_.isObject(a)) {
a = (a.line1 || '') + ' ' + (a.city || '') + ' ' + (a.state || '') + ' ' + (a.zip || '');
}
geocoder.geocode({ 'address' : a}, function(results, status) {
if(status === 'ZERO_RESULTS') {
deferred.resolve(null);
return;
}
var c = results[0].geometry.location;
deferred.resolve({latitude: c.lat(), longitude: c.lng()});
}, function(err) {
deferred.reject(err);
});
return deferred.promise;
}
If I have code like follows
model.beginCompoundOperation();
model.beginCompoundOperation()
someModelChanges();
model.endCompoundOperation();
model.beginCompoundOperation()
someMoreModelChanges();
model.endCompoundOperation();
model.endCompoundOperation()
When I call undo, will it group someModelChanges, and someMoreModelChanges together? I would like both to be undone as a batch operation. Thanks!
I put together a test page for this and it has the behavior you want and I would expect. Have fun with the realtime API!
var clientId = "<<<REPLACE WITH YOUR CLIENT ID>>>";
var REALTIME_MIMETYPE = 'application/vnd.google-apps.drive-sdk';
// Everything interesting is at the bottom in the onDocLoaded function.
function createRealtimeFile(title, description, callback)
{
console.log('Creating Drive Document');
gapi.client.drive.files.insert({
'resource':
{
'mimeType': REALTIME_MIMETYPE,
'title': title,
'description': description
}
}).execute(function (docInfo)
{
callback(docInfo, /*newDoc*/true);
});
}
function openRealtimeFile(title, callback)
{
gapi.client.load('drive', 'v2', function ()
{
gapi.client.drive.files.list(
{
'q': 'title='+"'"+title+"' and 'me' in owners and trashed=false"
}).execute(function (results)
{
if (!results.items)
{
createRealtimeFile(title, /*DocDescription*/"", callback);
}
else
{
callback(results.items[0], /*newDoc*/false);
}
});
});
}
function onPageLoad()
{
var GScope =
{
Drive: 'https://www.googleapis.com/auth/drive.file'
};
gapi.load('auth:client,drive-realtime,drive-share', function()
{
var handleAuthResult = function(authResult)
{
console.log('Requesting Drive Document');
openRealtimeFile("TESTDOC__", function (docInfo, newDoc)
{
if (docInfo && docInfo.id)
{
gapi.drive.realtime.load(docInfo.id, onDocLoaded, onDocInitialized, onDocLoadError);
}
else
{
console.log('Unable to find realtime doc');
debugger;
}
});
};
gapi.auth.authorize(
{
client_id: clientId,
scope: [ GScope.Drive ],
immediate: false
}, handleAuthResult);
});
}
function onDocInitialized(model)
{
console.log('Drive Document Initialized');
var docRoot = model.createMap();
model.getRoot().set('docRoot', docRoot);
}
function onDocLoaded(doc)
{
var docModel = doc.getModel();
var docRoot = docModel.getRoot();
console.log('Drive Document Loaded');
// If the loaded document has already been used to test, delete any previous data.
if (docRoot.has('testMap'))
{
docRoot.delete('testMap');
}
// Setup the new test data
docRoot.set('testMap', docModel.createMap());
var testMap = docRoot.get('testMap');
console.assert(testMap, 'Test map required');
var testString = docModel.createString();
testMap.set('testString', testString);
console.assert(testString.getText() === '');
docModel.beginCompoundOperation();
docModel.beginCompoundOperation();
testString.append('AAA');
docModel.endCompoundOperation();
docModel.beginCompoundOperation();
testString.append('BBB');
docModel.endCompoundOperation();
docModel.endCompoundOperation();
console.assert(testString.getText() === 'AAABBB');
docModel.undo();
console.assert(testString.getText() === '');
debugger;
}
function onDocLoadError(e)
{
console.log('Doc Load Error: ', e);
findAndLoadDoc();
}