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defined,
destroyObject,
DeveloperError,
FeatureDetection,
getElement,
} from "@cesium/engine";
import knockout from "../ThirdParty/knockout.js";
import GeocoderViewModel from "./GeocoderViewModel.js";
const startSearchPath =
"M29.772,26.433l-7.126-7.126c0.96-1.583,1.523-3.435,1.524-5.421C24.169,8.093,19.478,3.401,13.688,3.399C7.897,3.401,3.204,8.093,3.204,13.885c0,5.789,4.693,10.481,10.484,10.481c1.987,0,3.839-0.563,5.422-1.523l7.128,7.127L29.772,26.433zM7.203,13.885c0.006-3.582,2.903-6.478,6.484-6.486c3.579,0.008,6.478,2.904,6.484,6.486c-0.007,3.58-2.905,6.476-6.484,6.484C10.106,20.361,7.209,17.465,7.203,13.885z";
const stopSearchPath =
"M24.778,21.419 19.276,15.917 24.777,10.415 21.949,7.585 16.447,13.087 10.945,7.585 8.117,10.415 13.618,15.917 8.116,21.419 10.946,24.248 16.447,18.746 21.948,24.248z";
/**
* A widget for finding addresses and landmarks, and flying the camera to them. Geocoding is
* performed using {@link https://cesium.com/cesium-ion/|Cesium ion}.
*
* @alias Geocoder
* @constructor
*
* @param {object} options Object with the following properties:
* @param {Element|string} options.container The DOM element or ID that will contain the widget.
* @param {Scene} options.scene The Scene instance to use.
* @param {GeocoderService[]} [options.geocoderServices] The geocoder services to be used
* @param {boolean} [options.autoComplete = true] True if the geocoder should query as the user types to autocomplete
* @param {number} [options.flightDuration=1.5] The duration of the camera flight to an entered location, in seconds.
* @param {Geocoder.DestinationFoundFunction} [options.destinationFound=GeocoderViewModel.flyToDestination] A callback function that is called after a successful geocode. If not supplied, the default behavior is to fly the camera to the result destination.
*/
function Geocoder(options) {
//>>includeStart('debug', pragmas.debug);
if (!defined(options) || !defined(options.container)) {
throw new DeveloperError("options.container is required.");
}
if (!defined(options.scene)) {
throw new DeveloperError("options.scene is required.");
}
//>>includeEnd('debug');
const container = getElement(options.container);
const viewModel = new GeocoderViewModel(options);
viewModel._startSearchPath = startSearchPath;
viewModel._stopSearchPath = stopSearchPath;
const form = document.createElement("form");
form.setAttribute("data-bind", "submit: search");
const textBox = document.createElement("input");
textBox.type = "search";
textBox.className = "cesium-geocoder-input";
textBox.setAttribute("placeholder", "Enter an address or landmark...");
textBox.setAttribute(
"data-bind",
'\
textInput: searchText,\
disable: isSearchInProgress,\
event: { keyup: handleKeyUp, keydown: handleKeyDown, mouseover: deselectSuggestion },\
css: { "cesium-geocoder-input-wide" : keepExpanded || searchText.length > 0 },\
hasFocus: _focusTextbox',
);
this._onTextBoxFocus = function () {
// as of 2016-10-19, setTimeout is required to ensure that the
// text is focused on Safari 10
setTimeout(function () {
textBox.select();
}, 0);
};
textBox.addEventListener("focus", this._onTextBoxFocus, false);
form.appendChild(textBox);
this._textBox = textBox;
const searchButton = document.createElement("span");
searchButton.className = "cesium-geocoder-searchButton";
searchButton.setAttribute(
"data-bind",
"\
click: search,\
cesiumSvgPath: { path: isSearchInProgress ? _stopSearchPath : _startSearchPath, width: 32, height: 32 }",
);
form.appendChild(searchButton);
container.appendChild(form);
const searchSuggestionsContainer = document.createElement("div");
searchSuggestionsContainer.className = "search-results";
searchSuggestionsContainer.setAttribute(
"data-bind",
"visible: _suggestionsVisible",
);
const suggestionsList = document.createElement("ul");
suggestionsList.setAttribute("data-bind", "foreach: _suggestions");
const suggestions = document.createElement("li");
suggestionsList.appendChild(suggestions);
suggestions.setAttribute(
"data-bind",
"text: $data.displayName, \
click: $parent.activateSuggestion, \
event: { mouseover: $parent.handleMouseover}, \
css: { active: $data === $parent._selectedSuggestion }",
);
searchSuggestionsContainer.appendChild(suggestionsList);
container.appendChild(searchSuggestionsContainer);
knockout.applyBindings(viewModel, form);
knockout.applyBindings(viewModel, searchSuggestionsContainer);
this._container = container;
this._searchSuggestionsContainer = searchSuggestionsContainer;
this._viewModel = viewModel;
this._form = form;
this._onInputBegin = function (e) {
// e.target will not be correct if we are inside of the Shadow DOM
// and contains will always fail. To retrieve the correct target,
// we need to access the first element of the composedPath.
// This allows us to use shadow DOM if it exists and fall
// back to legacy behavior if its not being used.
let target = e.target;
if (typeof e.composedPath === "function") {
target = e.composedPath()[0];
}
if (!container.contains(target)) {
viewModel._focusTextbox = false;
viewModel.hideSuggestions();
}
};
this._onInputEnd = function (e) {
viewModel._focusTextbox = true;
viewModel.showSuggestions();
};
//We subscribe to both begin and end events in order to give the text box
//focus no matter where on the widget is clicked.
Iif (FeatureDetection.supportsPointerEvents()) {
document.addEventListener("pointerdown", this._onInputBegin, true);
container.addEventListener("pointerup", this._onInputEnd, true);
container.addEventListener("pointercancel", this._onInputEnd, true);
} else {
document.addEventListener("mousedown", this._onInputBegin, true);
container.addEventListener("mouseup", this._onInputEnd, true);
document.addEventListener("touchstart", this._onInputBegin, true);
container.addEventListener("touchend", this._onInputEnd, true);
container.addEventListener("touchcancel", this._onInputEnd, true);
}
}
Object.defineProperties(Geocoder.prototype, {
/**
* Gets the parent container.
* @memberof Geocoder.prototype
*
* @type {Element}
*/
container: {
get: function () {
return this._container;
},
},
/**
* Gets the parent container.
* @memberof Geocoder.prototype
*
* @type {Element}
*/
searchSuggestionsContainer: {
get: function () {
return this._searchSuggestionsContainer;
},
},
/**
* Gets the view model.
* @memberof Geocoder.prototype
*
* @type {GeocoderViewModel}
*/
viewModel: {
get: function () {
return this._viewModel;
},
},
});
/**
* @returns {boolean} true if the object has been destroyed, false otherwise.
*/
Geocoder.prototype.isDestroyed = function () {
return false;
};
/**
* Destroys the widget. Should be called if permanently
* removing the widget from layout.
*/
Geocoder.prototype.destroy = function () {
const container = this._container;
Iif (FeatureDetection.supportsPointerEvents()) {
document.removeEventListener("pointerdown", this._onInputBegin, true);
container.removeEventListener("pointerup", this._onInputEnd, true);
} else {
document.removeEventListener("mousedown", this._onInputBegin, true);
container.removeEventListener("mouseup", this._onInputEnd, true);
document.removeEventListener("touchstart", this._onInputBegin, true);
container.removeEventListener("touchend", this._onInputEnd, true);
}
this._viewModel.destroy();
knockout.cleanNode(this._form);
knockout.cleanNode(this._searchSuggestionsContainer);
container.removeChild(this._form);
container.removeChild(this._searchSuggestionsContainer);
this._textBox.removeEventListener("focus", this._onTextBoxFocus, false);
return destroyObject(this);
};
/**
* A function that handles the result of a successful geocode.
* @callback Geocoder.DestinationFoundFunction
* @param {GeocoderViewModel} viewModel The view model.
* @param {Cartesian3|Rectangle} destination The destination result of the geocode.
*/
export default Geocoder;
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