340 lines
8.9 KiB
JavaScript
340 lines
8.9 KiB
JavaScript
import angular from 'angular';
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import template from '%/directives/panel-resizer.pug';
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import { debounce } from '@/utils';
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const PANEL_SIDE_RIGHT = 'right';
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const PANEL_SIDE_LEFT = 'left';
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const MOUSE_EVENT_MOVE = 'mousemove';
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const MOUSE_EVENT_DOWN = 'mousedown';
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const MOUSE_EVENT_UP = 'mouseup';
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const WINDOW_EVENT_RESIZE = 'resize';
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const PANEL_CSS_CLASS_HOVERABLE = 'hoverable';
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const PANEL_CSS_CLASS_ALWAYS_VISIBLE = 'always-visible';
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const PANEL_CSS_CLASS_DRAGGING = 'dragging';
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const PANEL_CSS_CLASS_NO_SELECTION = 'no-selection';
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const PANEL_CSS_CLASS_COLLAPSED = 'collapsed';
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const PANEL_CSS_CLASS_ANIMATE_OPACITY = 'animate-opacity';
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class PanelResizerCtrl {
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/* @ngInject */
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constructor(
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$compile,
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$element,
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$scope,
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$timeout,
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) {
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this.$compile = $compile;
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this.$element = $element;
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this.$scope = $scope;
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this.$timeout = $timeout;
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}
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$onInit() {
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this.configureControl();
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this.configureDefaults();
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this.addDoubleClickHandler();
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this.reloadDefaultValues();
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this.addMouseDownListener();
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this.addMouseMoveListener();
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this.addMouseUpListener();
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}
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configureControl() {
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this.control.setWidth = (value) => {
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this.setWidth(value, true);
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};
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this.control.setLeft = (value) => {
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this.setLeft(value);
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};
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this.control.flash = () => {
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this.flash();
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};
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this.control.isCollapsed = () => {
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return this.isCollapsed();
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};
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}
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configureDefaults() {
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this.panel = document.getElementById(this.panelId);
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if (!this.panel) {
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console.error('Panel not found for', this.panelId);
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}
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this.resizerColumn = this.$element[0];
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this.currentMinWidth = this.minWidth || this.resizerColumn.offsetWidth;
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this.pressed = false;
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this.startWidth = this.panel.scrollWidth;
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this.lastDownX = 0;
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this.collapsed = false;
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this.lastWidth = this.startWidth;
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this.startLeft = this.panel.offsetLeft;
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this.lastLeft = this.startLeft;
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this.appFrame = null;
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this.widthBeforeLastDblClick = 0;
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if (this.property === PANEL_SIDE_RIGHT) {
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this.configureRightPanel();
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}
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if (this.alwaysVisible) {
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this.resizerColumn.classList.add(PANEL_CSS_CLASS_ALWAYS_VISIBLE);
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}
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if (this.hoverable) {
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this.resizerColumn.classList.add(PANEL_CSS_CLASS_HOVERABLE);
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}
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}
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configureRightPanel() {
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const handleResize = debounce(event => {
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this.reloadDefaultValues();
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this.handleWidthEvent();
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this.$timeout(() => {
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this.finishSettingWidth();
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});
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}, 250);
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window.addEventListener(WINDOW_EVENT_RESIZE, handleResize);
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this.$scope.$on('$destroy', () => {
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window.removeEventListener(WINDOW_EVENT_RESIZE, handleResize);
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});
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}
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getParentRect() {
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return this.panel.parentNode.getBoundingClientRect();
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}
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reloadDefaultValues() {
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this.startWidth = this.isAtMaxWidth()
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? this.getParentRect().width
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: this.panel.scrollWidth;
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this.lastWidth = this.startWidth;
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this.appFrame = document.getElementById('app').getBoundingClientRect();
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}
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addDoubleClickHandler() {
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this.resizerColumn.ondblclick = () => {
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this.$timeout(() => {
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const preClickCollapseState = this.isCollapsed();
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if (preClickCollapseState) {
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this.setWidth(this.widthBeforeLastDblClick || this.defaultWidth);
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} else {
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this.widthBeforeLastDblClick = this.lastWidth;
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this.setWidth(this.currentMinWidth);
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}
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this.finishSettingWidth();
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const newCollapseState = !preClickCollapseState;
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this.onResizeFinish()(
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this.lastWidth,
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this.lastLeft,
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this.isAtMaxWidth(),
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newCollapseState
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);
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});
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};
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}
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addMouseDownListener() {
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this.resizerColumn.addEventListener(MOUSE_EVENT_DOWN, (event) => {
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this.addInvisibleOverlay();
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this.pressed = true;
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this.lastDownX = event.clientX;
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this.startWidth = this.panel.scrollWidth;
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this.startLeft = this.panel.offsetLeft;
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this.panel.classList.add(PANEL_CSS_CLASS_NO_SELECTION);
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if (this.hoverable) {
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this.resizerColumn.classList.add(PANEL_CSS_CLASS_DRAGGING);
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}
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});
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}
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addMouseMoveListener() {
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document.addEventListener(MOUSE_EVENT_MOVE, (event) => {
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if (!this.pressed) {
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return;
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}
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event.preventDefault();
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if (this.property && this.property === PANEL_SIDE_LEFT) {
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this.handleLeftEvent(event);
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} else {
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this.handleWidthEvent(event);
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}
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});
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}
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handleWidthEvent(event) {
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let x;
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if (event) {
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x = event.clientX;
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} else {
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/** Coming from resize event */
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x = 0;
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this.lastDownX = 0;
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}
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const deltaX = x - this.lastDownX;
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const newWidth = this.startWidth + deltaX;
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this.setWidth(newWidth, false);
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if (this.onResize()) {
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this.onResize()(this.lastWidth, this.panel);
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}
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}
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handleLeftEvent(event) {
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const panelRect = this.panel.getBoundingClientRect();
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const x = event.clientX || panelRect.x;
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let deltaX = x - this.lastDownX;
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let newLeft = this.startLeft + deltaX;
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if (newLeft < 0) {
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newLeft = 0;
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deltaX = -this.startLeft;
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}
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const parentRect = this.getParentRect();
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let newWidth = this.startWidth - deltaX;
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if (newWidth < this.currentMinWidth) {
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newWidth = this.currentMinWidth;
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}
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if (newWidth > parentRect.width) {
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newWidth = parentRect.width;
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}
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if (newLeft + newWidth > parentRect.width) {
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newLeft = parentRect.width - newWidth;
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}
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this.setLeft(newLeft, false);
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this.setWidth(newWidth, false);
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}
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addMouseUpListener() {
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document.addEventListener(MOUSE_EVENT_UP, event => {
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this.removeInvisibleOverlay();
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if (this.pressed) {
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this.pressed = false;
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this.resizerColumn.classList.remove(PANEL_CSS_CLASS_DRAGGING);
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this.panel.classList.remove(PANEL_CSS_CLASS_NO_SELECTION);
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const isMaxWidth = this.isAtMaxWidth();
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if (this.onResizeFinish) {
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this.onResizeFinish()(
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this.lastWidth,
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this.lastLeft,
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isMaxWidth,
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this.isCollapsed()
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);
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}
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this.finishSettingWidth();
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}
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});
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}
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isAtMaxWidth() {
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return (
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Math.round(this.lastWidth + this.lastLeft) ===
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Math.round(this.getParentRect().width)
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);
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}
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isCollapsed() {
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return this.lastWidth <= this.currentMinWidth;
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}
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setWidth(width, finish) {
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if (width < this.currentMinWidth) {
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width = this.currentMinWidth;
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}
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const parentRect = this.getParentRect();
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if (width > parentRect.width) {
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width = parentRect.width;
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}
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const maxWidth = this.appFrame.width - this.panel.getBoundingClientRect().x;
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if (width > maxWidth) {
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width = maxWidth;
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}
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if (Math.round(width + this.lastLeft) === Math.round(parentRect.width)) {
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this.panel.style.width = `calc(100% - ${this.lastLeft}px)`;
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this.panel.style.flexBasis = `calc(100% - ${this.lastLeft}px)`;
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} else {
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this.panel.style.flexBasis = width + 'px';
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this.panel.style.width = width + 'px';
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}
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this.lastWidth = width;
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if (finish) {
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this.finishSettingWidth();
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}
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}
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setLeft(left) {
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this.panel.style.left = left + 'px';
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this.lastLeft = left;
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}
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finishSettingWidth() {
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if (!this.collapsable) {
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return;
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}
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this.collapsed = this.isCollapsed();
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if (this.collapsed) {
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this.resizerColumn.classList.add(PANEL_CSS_CLASS_COLLAPSED);
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} else {
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this.resizerColumn.classList.remove(PANEL_CSS_CLASS_COLLAPSED);
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}
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}
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/**
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* If an iframe is displayed adjacent to our panel, and the mouse exits over the iframe,
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* document[onmouseup] is not triggered because the document is no longer the same over
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* the iframe. We add an invisible overlay while resizing so that the mouse context
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* remains in our main document.
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*/
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addInvisibleOverlay() {
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if (this.overlay) {
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return;
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}
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this.overlay = this.$compile(`<div id='resizer-overlay'></div>`)(this.$scope);
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angular.element(document.body).prepend(this.overlay);
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}
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removeInvisibleOverlay() {
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if (this.overlay) {
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this.overlay.remove();
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this.overlay = null;
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}
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}
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flash() {
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const FLASH_DURATION = 3000;
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this.resizerColumn.classList.add(PANEL_CSS_CLASS_ANIMATE_OPACITY);
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this.$timeout(() => {
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this.resizerColumn.classList.remove(PANEL_CSS_CLASS_ANIMATE_OPACITY);
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}, FLASH_DURATION);
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}
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}
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export class PanelResizer {
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constructor() {
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this.restrict = 'E';
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this.template = template;
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this.controller = PanelResizerCtrl;
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this.controllerAs = 'ctrl';
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this.bindToController = true;
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this.scope = {
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alwaysVisible: '=',
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collapsable: '=',
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control: '=',
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defaultWidth: '=',
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hoverable: '=',
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index: '=',
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minWidth: '=',
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onResize: '&',
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onResizeFinish: '&',
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panelId: '=',
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property: '='
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};
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}
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}
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