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ItemContainer.ts
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ItemContainer.ts
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import $ from 'jquery';
import {
ReactComponentConfig,
isGLComponentConfig,
ComponentConfig,
} from '../config';
import type Tab from '../controls/Tab';
import type { AbstractContentItem, Component } from '../items';
import type LayoutManager from '../LayoutManager';
import EventEmitter from '../utils/EventEmitter';
export type CloseOptions = { force?: boolean };
export default class ItemContainer<
C extends ComponentConfig | ReactComponentConfig = ComponentConfig,
> extends EventEmitter {
width?: number;
height?: number;
title?: string;
parent: Component;
layoutManager: LayoutManager;
tab?: Tab;
// This type is to make TS happy and allow ReactComponentConfig passed to container generic
_config: C & { componentState: Record<string, unknown> };
isHidden = false;
beforeCloseHandler: ((options?: CloseOptions) => boolean) | null;
_element = $(
[
'<div class="lm_item_container">',
'<div class="lm_content" tabindex="-1"></div>',
'</div>',
].join('')
);
_contentElement: JQuery<HTMLElement>;
constructor(config: C, parent: Component, layoutManager: LayoutManager) {
super();
this.title = isGLComponentConfig(config) ? config.componentName : '';
this.parent = parent;
this.layoutManager = layoutManager;
this._config = config as C & { componentState: Record<string, unknown> };
this._contentElement = this._element.find('.lm_content');
this.beforeCloseHandler = null;
}
/**
* Get the inner DOM element the container's content
* is intended to live in
*/
getElement() {
return this._contentElement;
}
/**
* Hide the container. Notifies the containers content first
* and then hides the DOM node. If the container is already hidden
* this should have no effect
*/
hide() {
this.emit('hide');
this.isHidden = true;
this._element.hide();
}
/**
* Shows a previously hidden container. Notifies the
* containers content first and then shows the DOM element.
* If the container is already visible this has no effect.
*/
show() {
this.emit('show');
this.isHidden = false;
this._element.show();
// call shown only if the container has a valid size
if (this.height != 0 || this.width != 0) {
this.emit('shown');
}
}
/**
* Set the size from within the container. Traverses up
* the item tree until it finds a row or column element
* and resizes its items accordingly.
*
* If this container isn't a descendant of a row or column
* it returns false
* @todo Rework!!!
* @param width The new width in pixel
* @param height The new height in pixel
*
* @returns resizeSuccesful
*/
setSize(width: number, height: number) {
let rowOrColumn: AbstractContentItem | null = this.parent;
let rowOrColumnChild: AbstractContentItem | null = null;
while (rowOrColumn && !rowOrColumn.isColumn && !rowOrColumn.isRow) {
rowOrColumnChild = rowOrColumn;
rowOrColumn = rowOrColumn.parent;
/**
* No row or column has been found
*/
if (rowOrColumn?.isRoot) {
return false;
}
}
if (!rowOrColumn || !rowOrColumnChild) {
return false;
}
const direction = rowOrColumn.isColumn ? 'height' : 'width';
const newSize = direction === 'height' ? height : width;
const totalPixel =
(this[direction] ?? 0) *
(1 / ((rowOrColumnChild.config[direction] ?? 0) / 100));
const percentage = (newSize / totalPixel) * 100;
const delta =
((rowOrColumnChild.config[direction] ?? 0) - percentage) /
(rowOrColumn.contentItems.length - 1);
for (let i = 0; i < rowOrColumn.contentItems.length; i++) {
if (rowOrColumn.contentItems[i] === rowOrColumnChild) {
rowOrColumn.contentItems[i].config[direction] = percentage;
} else {
rowOrColumn.contentItems[i].config[direction] =
(rowOrColumn.contentItems[i].config[direction] ?? 0) + delta;
}
}
rowOrColumn.callDownwards('setSize');
return true;
}
/**
* Closes the container if it is closable. Can be called by
* both the component within at as well as the contentItem containing
* it. Emits a close event before the container itself is closed.
* @param options Options to pass into the beforeClose handler
*/
close(options?: CloseOptions) {
// Not closable, don't do anything
if (!this._config.isClosable) return;
// If beforeCloseHandler returns true or if the handler doesn't exist, close
if (this.beforeCloseHandler?.(options) ?? true) {
this.emit('close');
this.parent.close();
}
}
/**
* Sets the beforeCloseHandler to callback
* @param callback Callback function to call before closing
*/
beforeClose(callback: ((options?: CloseOptions) => boolean) | null) {
this.beforeCloseHandler = callback;
}
/**
* Returns the current state object
*
* @returns state
*/
getState() {
return this._config.componentState;
}
/**
* Returns the object's config
*
* @returns id
*/
getConfig() {
return this._config;
}
/**
* Merges the provided state into the current one
*
* @param state
*/
extendState(state: string) {
this.setState($.extend(true, this.getState(), state));
}
/**
* Notifies the layout manager of a stateupdate
*
* @param state
*/
setState(state: Record<string, unknown>) {
this._config.componentState = state;
this.parent.emitBubblingEvent('stateChanged');
}
/**
* Set's the components title
*
* @param title
*/
setTitle(title: string) {
this.parent.setTitle(title);
}
/**
* Set's the containers size. Called by the container's component.
* To set the size programmatically from within the container please
* use the public setSize method
*
* @param width in px
* @param height in px
*/
_$setSize(width = 0, height = 0) {
if (width !== this.width || height !== this.height) {
this.width = width;
this.height = height;
var cl = this._contentElement[0];
var hdelta = cl.offsetWidth - cl.clientWidth;
var vdelta = cl.offsetHeight - cl.clientHeight;
this._contentElement
.width(this.width - hdelta)
.height(this.height - vdelta);
this.emit('resize');
}
}
}