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CalloutAnnotationControl.js
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187 lines (164 loc) · 5 KB
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import Rect from './graphics/structs/Rect';
import createGraphics from './graphics/createGraphics';
import { getFixOfPixelAlignment, getInnerSize } from './graphics/dom';
import JsonML from './common/jsonml-html';
import Callout from './graphics/shapes/Callout';
/**
* Creates JavaScript Callout Annotation Control
*
* @class Control
* @param {object} element Reference to placeholder `div` element in the DOM. The control renders its content
* inside of that div element.
* @param {CalloutAnnotationControlConfig} options Callout Annotation Configuration object
*
* @returns {CalloutAnnotationControl} Returns reference to callout annotation control.
*/
export default function CalloutAnnotationControl(element, options) {
var _data = {
name: "calloutcontrol",
element: element,
options: options,
placeholder: null,
panelSize: null,
graphics: null,
labelTemplate: null
};
if(!element) {
throw "Control's placeholder element is undefined";
}
if(!options) {
throw "Control's options argument is undefined";
}
function createLayout() {
var viewportSize = getInnerSize(_data.element);
_data.panelSize = new Rect(0, 0, viewportSize.width, viewportSize.height);
var pixelAlignmentFix = getFixOfPixelAlignment(element);
JsonML.appendDOM(_data.element, JsonML.toHTML(
["div", /* root control panel */
{
"tabindex": 0,
"style": {
"position": "relative",
"overflow": "hidden",
"top": "0px",
"left": "0px",
"width": _data.panelSize.width,
"height": _data.panelSize.height,
"padding": "0px",
"marginBottom": "0px",
"marginRight": "0px",
"marginLeft": pixelAlignmentFix.width + "px", /* fixes div pixel alignment */
"marginTop": pixelAlignmentFix.height + "px"
},
"name": "placeholder",
"class": _data.name,
"$": function (element) { _data.placeholder = element; }
}
])
);
_data.graphics = createGraphics(_data.element);
};
function cleanLayout() {
if (_data.graphics !== null) {
_data.graphics.clean();
}
_data.graphics = null;
var placeholder = _data.placeholder;
if (placeholder != null) {
var parent = placeholder.parentNode;
if (parent != null) {
parent.removeChild(placeholder);
}
}
}
function updateLayout() {
var viewportSize = getInnerSize(_data.element),
pixelAlignmentFix = getFixOfPixelAlignment(_data.element);
_data.panelSize = new Rect(0, 0, viewportSize.width, viewportSize.height);
JsonML.applyStyles(_data.placeholder, {
"width": _data.panelSize.width,
"height": _data.panelSize.height,
"marginBottom": "0px",
"marginRight": "0px",
"marginLeft": pixelAlignmentFix.width + "px", /* fixes div pixel alignment */
"marginTop": pixelAlignmentFix.height + "px"
});
}
function update(recreate) {
if (recreate) {
cleanLayout();
createLayout();
redraw();
}
else {
updateLayout();
_data.graphics.resize("placeholder", _data.panelSize.width, _data.panelSize.height);
_data.graphics.begin();
redraw();
_data.graphics.end();
}
}
function redraw() {
var annotationConfig = _data.options,
callout;
_data.graphics.activate("placeholder");
if (annotationConfig.position != null) {
callout = new Callout(_data.graphics);
primitives.mergeObjects(callout, options);
var position = annotationConfig.position;
/* offset position */
position = new Rect(annotationConfig.position).offset(annotationConfig.offset);
callout.draw(annotationConfig.snapPoint, position);
}
}
function destroy() {
cleanLayout();
};
/**
* Call this method to update controls configuration. Control uses default Config instance to initialize itself,
* so it sets only options provided in the options parameter.
*
* @param {object} options Options
*/
function setOptions(options) {
for (var option in options) {
if (options.hasOwnProperty(option)) {
_data.options[option] = options[option];
}
}
}
/**
* This method returns current configuration object.
*
* @returns {object} Returns reference to current configuration object
*/
function getOptions() {
return _data.options;
}
/**
* This method returns configuration option by name.
*
* @param {*} option Option name
*/
function getOption(option) {
return _data.options[option];
}
/**
* Sets configuration option of the control by name.
*
* @param {*} option Option name
* @param {*} value Option value
*/
function setOption(option, value) {
return _data.options[option] = value;
}
update(true); /* init control on create */
return {
destroy: destroy,
setOptions: setOptions,
getOptions: getOptions,
setOption: setOption,
getOption: getOption,
update: update
};
};