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(function () {
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let initData = null;
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let grid = null;
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let currentComponent = null;
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let cellHeight = 40;
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// 生成唯一id
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var generateUniqueId = function () {
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const timestamp = Date.now().toString(36);
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const randomNum = Math.random().toString(36).substring(2);
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return timestamp + randomNum;
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};
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/** 初始化 */
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var init = function () {
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const initDataStorage = localStorage.getItem('initData');
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if (!initDataStorage) {
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initData = {
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id: `grid_${generateUniqueId()}`,
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children: [],
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version: '1.0.0',
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width: 1920,
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height: 1080,
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};
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} else {
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initData = JSON.parse(initDataStorage);
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conputedInitData('init');
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}
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console.log(initData, 'initData');
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// 让gridstack知道如何渲染，组件children中的content直接渲染html
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GridStack.renderCB = function (el, w) {
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el.innerHTML = w.content;
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};
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grid = GridStack.init({
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// 一行高度
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cellHeight,
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// 间距
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margin: 5,
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minRow: Math.floor(($(window).height() - 80) / cellHeight),
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acceptWidgets: true,
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float: true,
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removable: '#trash',
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// subGridOpts: subOptions,
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// subGridDynamic: true,
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children: initData.children,
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});
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GridStack.setupDragIn('#components-panel .component-item', undefined, [
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{
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w: 2,
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h: 4,
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type: 'image',
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name: '图片',
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image: '',
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eventsType: 'click',
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eventsAction: '',
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defaultFocus: false,
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leftId: '',
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rightId: '',
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upId: '',
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downId: '',
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},
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{
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w: 2,
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h: 2,
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type: 'text',
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childrenType: '',
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name: '文本',
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background: '#fff',
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fontSize: '14px',
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color: '#333',
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text: '文本',
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fontWeight: 'normal',
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eventsType: 'click',
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eventsAction: '',
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defaultFocus: false,
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leftId: '',
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rightId: '',
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upId: '',
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downId: '',
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},
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]);
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console.log(grid, 'grid实例');
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// grid.load(initData.children);
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grid.engine.nodes.forEach((item) => {
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handleAddComponent(item);
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});
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grid.on('added', function (_event, itemArray) {
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console.log(itemArray, '这里触发了添加了added事件');
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itemArray.forEach((item) => {
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handleAddComponent(item);
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});
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});
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grid.on('removed', function (_event, itemArray) {
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console.log(itemArray, '这里触发了移除removed事件');
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itemArray.forEach((item) => {
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handleRemoveComponent(item);
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});
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});
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};
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// 处理添加组件之后的操作
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var handleAddComponent = (component) => {
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if (!component.id) {
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component.id = `${component.type}_${generateUniqueId()}`;
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}
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setComponentView(component);
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component.el.addEventListener('click', () => {
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console.log('点击组件', component);
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if (currentComponent && currentComponent.id === component.id) {
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return;
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}
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currentComponent = component;
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// 右侧显示组件属性列表
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if (!$('#props-panel').find('form').is(':visible')) {
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$('#props-panel').find('.wait-box').hide();
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$('#props-panel').find('form').show();
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}
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// 将当前选中组件的属性显示在右侧列表中
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setCurrentComponentProps(currentComponent);
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// 设置上下左右移动组件ID
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setMoveComponentId(currentComponent);
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});
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};
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// 设置上下左右移动组件ID
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var setMoveComponentId = function (component) {
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const allComponents = grid.save();
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if (allComponents.length <= 1) {
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return;
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}
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setMoveComponentHtml('leftId', component, allComponents);
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setMoveComponentHtml('rightId', component, allComponents);
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setMoveComponentHtml('upId', component, allComponents);
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setMoveComponentHtml('downId', component, allComponents);
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};
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var setMoveComponentHtml = function (idName, component, allComponents) {
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let componentsHtml = [{ value: '', text: '请选择' }];
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allComponents
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.filter((item) => item.id !== component.id)
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.map((item) => {
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componentsHtml.push({ value: item.id, text: `${item.name}(${item.id})`, selected: item.id === component[idName] });
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});
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let el = $(`#${idName}`);
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el.empty();
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componentsHtml.forEach((item) => {
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el.append(
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$('<option>', {
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value: item.value,
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text: item.text,
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selected: item.selected || false,
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})
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);
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});
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};
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var handleRemoveComponent = (component) => {
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if (currentComponent && currentComponent.id === component.id) {
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currentComponent = null;
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// 右侧显示请选择组件
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if (!$('#props-panel').find('wait-box').is(':visible')) {
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$('#props-panel').find('.wait-box').show();
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$('#props-panel').find('form').hide();
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}
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}
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};
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//将当前选中组件的属性显示在右侧列表中
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var setCurrentComponentProps = function (component) {
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const form = $('#props-panel').find('form');
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if (component.hasOwnProperty('childrenType')) {
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form.find('#childrenType').val(component.childrenType);
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form.find('#childrenType').parent().show();
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} else {
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form.find('#childrenType').parent().hide();
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}
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form.find('#name').val(component.name);
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if (component.hasOwnProperty('image')) {
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form.find('#image').val(component.image);
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form.find('#image').parent().show();
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} else {
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form.find('#image').parent().hide();
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}
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if (component.hasOwnProperty('background')) {
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form.find('#background').val(component.background);
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form.find('#background').parent().show();
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} else {
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form.find('#background').parent().hide();
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}
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if (component.type === 'text') {
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form.find('#text').val(component.text);
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form.find('#fontSize').val(component.fontSize);
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form.find('#color').val(component.color);
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form.find('#fontWeight').val(component.fontWeight);
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form.find('#text').parent().show();
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form.find('#fontSize').parent().show();
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form.find('#color').parent().show();
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form.find('#fontWeight').parent().show();
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} else {
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form.find('#text').parent().hide();
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form.find('#fontSize').parent().hide();
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form.find('#color').parent().hide();
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form.find('#fontWeight').parent().hide();
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}
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form.find('#eventsType').val(component.eventsType);
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form.find('#eventsAction').val(component.eventsAction);
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form.find('#defaultFocus').val(component.defaultFocus);
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form.find('#leftId').val(component.leftId);
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form.find('#rightId').val(component.rightId);
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form.find('#upId').val(component.upId);
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form.find('#downId').val(component.downId);
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};
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// 定义组件设置配置策略
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const componentStrategies = {
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background: function (el, value) {
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el.find('.grid-stack-item-content').css('background', value);
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},
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image: function (el, value) {
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el.find('.grid-stack-item-content').css('background', `url(${value}) no-repeat center center`).css('background-size', 'cover');
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},
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fontSize: function (el, value) {
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el.find('span').css('font-size', value + 'px');
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},
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color: function (el, value) {
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el.find('span').css('color', value);
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},
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text: function (el, value) {
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el.find('span').text(value);
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},
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fontWeight: function (el, value) {
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el.find('span').css('font-weight', value);
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},
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};
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// 设置当前传递组件的视图展示
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var setComponentView = function (component, fields = null) {
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const el = $(component.el);
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// 确定要处理的属性
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const propsToHandle = fields || Object.keys(componentStrategies);
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// 遍历并执行对应的策略
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propsToHandle.forEach((prop) => {
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if (componentStrategies[prop] && component[prop] !== undefined) {
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componentStrategies[prop](el, component[prop]);
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}
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});
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};
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// 定义映射关系：元素ID -> 事件类型 -> 组件属性
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const elementMappings = {
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childrenType: { event: 'blur', property: 'childrenType' },
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background: { event: 'blur', property: 'background' },
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image: { event: 'change', property: 'image' },
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fontSize: { event: 'blur', property: 'fontSize' },
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color: { event: 'blur', property: 'color' },
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text: { event: 'blur', property: 'text' },
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fontWeight: { event: 'blur', property: 'fontWeight' },
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eventsType: { event: 'blur', property: 'eventsType' },
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eventsAction: { event: 'blur', property: 'eventsAction' },
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defaultFocus: { event: 'blur', property: 'defaultFocus' },
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leftId: { event: 'change', property: 'leftId' },
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rightId: { event: 'change', property: 'rightId' },
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upId: { event: 'change', property: 'upId' },
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downId: { event: 'change', property: 'downId' },
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};
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// 统一绑定函数
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var bindComponentEvents = function () {
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Object.keys(elementMappings).forEach((elementId) => {
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const mapping = elementMappings[elementId];
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const $element = $('#' + elementId);
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if ($element.length) {
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// 组件名称添加失去焦点事件或者change事件
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$element.off(mapping.event).on(mapping.event, function () {
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const value = $(this).val();
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currentComponent[mapping.property] = value;
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setComponentView(currentComponent, [mapping.property]);
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});
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}
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});
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};
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// 保存的时候计算x,y,w,h
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var conputedInitData = function (type) {
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if (type === 'save') {
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let initDataCopy = JSON.parse(JSON.stringify(initData));
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initDataCopy.children.forEach((item) => {
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item.xCopy = item.x;
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item.x = item.x * (1920 / 12);
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item.yCopy = item.y;
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item.y = item.y * cellHeight;
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item.wCopy = item.w;
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item.w = item.w * (1920 / 12);
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if (!item.hasOwnProperty('h')) {
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item.h = 1;
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}
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item.hCopy = item.h;
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item.h = item.h * cellHeight;
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});
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console.log(initDataCopy);
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return initDataCopy;
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}
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if (type === 'init') {
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initData.children.forEach((item) => {
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item.x = item.xCopy;
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item.y = item.yCopy;
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item.w = item.wCopy;
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item.h = item.hCopy;
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});
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}
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};
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$('.save-container').click(function () {
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// grid.addWidget({ w: 2, content: 'item 1' });
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// console.log(grid.save());
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// console.log(grid);
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initData.children = grid.save();
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console.log(initData);
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localStorage.setItem('initData', JSON.stringify(conputedInitData('save')));
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});
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/** 执行方法 */
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$(function () {
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init();
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// 调用绑定
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bindComponentEvents();
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});
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})();
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