334 lines
8.5 KiB
JavaScript
334 lines
8.5 KiB
JavaScript
var bricks = window.bricks || {};
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bricks.DataViewer = class extends bricks.VBox {
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constructor(opts){
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opts.width = '100%';
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opts.height = '100%';
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opts.overflow = 'hidden';
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super(opts);
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this.loader = new bricks.PageDataLoader({
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url:this.opts.data_url,
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params:this.opts.data_params,
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pagerows:this.opts.page_rows,
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method:this.opts.data_method,
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cache_pages:this.opts.cache_limit
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});
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this.old_params = null;
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this.select_row = null;
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this.active_item = null;
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this.loading = false;
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this.data_offset = 0;
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this.bind('row_check_changed', this.show_check_event_data.bind(this));
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schedule_once(this.build_all.bind(this), 0.1);
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}
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async build_all(){
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this.build_title_widget();
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this.build_description_widget();
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this.build_toolbar_widget();
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this.build_records_area();
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await this.build_other();
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this.check_changed_row = null;
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this.scrollpanel.bind('min_threshold', this.load_previous_page.bind(this));
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this.scrollpanel.bind('max_threshold', this.load_next_page.bind(this));
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await this.render();
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}
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async build_other(){
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}
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async render(params) {
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params = params || {};
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if (params == this.old_params){
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return;
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}
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this.old_params = params;
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bricks.debug('params=', params, 'render() called');
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var d = await this.loader.loadData(params);
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if (d){
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this.scrollpanel.clear_widgets();
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await this.before_data_handle();
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await this.dataHandle(d);
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} else {
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bricks.debug(params, 'load data return null');
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}
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}
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async before_data_handle(){
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}
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async dataHandle(d){
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var data = d.rows;
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var page = d.add_page;
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if (!data){
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return;
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}
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await this.renderPageData(data, page);
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if (d.delete_page){
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this.delete_page(d.delete_page);
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}
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}
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build_records_area(){
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this.filler_widget = new bricks.Filler({});
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this.add_widget(this.filler_widget)
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this.scrollpanel = new bricks.VBox({});
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this.scrollpanel.set_css('scrollpanel');
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this.scrollpanel.set_style('height','100%');
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this.scrollpanel.set_style('width','100%');
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this.scrollpanel.set_style('overflow','auto');
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this.filler_widget.add_widget(this.scrollpanel);
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}
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async renderPageData(data, page){
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var pos;
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if (! this.loader.is_max_page(page)){
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data.reverse();
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pos = this.data_offset;
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} else {
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pos = null;
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}
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for(var i=0; i<data.length;i++){
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var rec = data[i];
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await this.build_row(rec, page, pos);
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}
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}
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async build_record_view(record){
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/* will be overwrite by subclass */
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var w = new bricks.VBox({width: '100px',height:'100px'});
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w.set_css('test_box');
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return w;
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}
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async build_row(record, page, pos){
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var r = await this.build_record_view(record);
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r.set_attribute('data-page', page);
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this.scrollpanel.add_widget(r, pos);
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}
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show_check_event_data(event){
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var d = event.params;
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console.log('row_check_changed event data=', d);
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}
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build_toolbar_widget(){
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var edit_names = [];
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var tbdesc = {
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width:'auto',
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tools:[]
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}
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if (this.editable){
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tbdesc.tools = [
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{
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name:'add',
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tip:'add new record',
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icon:this.editable.add_icon || bricks_resource('imgs/add.png')
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},
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{
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name:'update',
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tip:'update selected record',
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selected_row:true,
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icon:this.editable.update_icon || bricks_resource('imgs/update.png')
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},
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{
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name:'delete',
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tip:'delete selected record',
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selected_row:true,
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icon:this.editable.delete_icon || bricks_resource('imgs/delete.png')
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}
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];
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tbdesc.tools.forEach(t => {
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edit_names.push(t.name);
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});
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}
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if (this.toolbar){
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this.toolbar.tools.forEach(t => {
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if (! edit_names.incloudes(t.name)){
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tbdesc.tools.push(t);
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}
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});
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}
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if (tbdesc.tools.length == 0){
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return;
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}
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this.toolbar_w = new bricks.IconTextBar(tbdesc);
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this.add_widget(this.toolbar_w);
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this.toolbar_w.bind('command', this.command_event_handle.bind(this));
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}
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command_event_handle(event){
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var tdesc = event.params;
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if (tdesc.selected_row && ! this.select_row){
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bricks.show_error({title:'Error', message:'need select a row'});
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return;
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}
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if (tdesc.name == 'add'){
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this.add_record();
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return;
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}
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if (tdesc.name == 'update'){
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this.update_record(this.select_row);
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return;
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}
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if (tdesc.name == 'delete'){
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this.delete_record(this.select_row);
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return;
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}
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var d = {
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tabular:this,
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row:this.select_row,
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data:row.user_data
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}
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this.dispathc(t.name. d);
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}
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get_edit_fields(){
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var fs = this.row_options.fields;
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this.fields = [];
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var exclouded = [];
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if (this.row_options.editexclouded){
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exclouded = this.row_options.editexclouded;
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}
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fs.forEach(f => {
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if (!exclouded.includes(f.name)){
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this.fields.push(f);
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}
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});
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}
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record_check_changed(event){
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this.check_changed_row = event.params;
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this.dispatch('row_check_changed', event.params.user_data);
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}
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async renew_record_view(form, row){
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var d = form.getValue();
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var record = bricks.extend(row.user_data, d);
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row.renew(record);
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}
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get_hidefields(){
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var fs = [];
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var params = this.data_params || {};
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for (var k in params){
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fs.push({name:k, value:params[k], uitype:'hide'});
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}
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return fs;
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}
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add_record(info){
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var hidefields = [];
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if (!this.data_params){
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this.data_params = {}
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}
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var fs = this.get_hidefields();
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for (var i=0;i<this.fields.length;i++){
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fs.push(this.fields[i]);
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}
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var f = new bricks.ModalForm({
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"width":"90%",
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"height":"70%",
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"submit_url":this.editable.new_data_url,
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"fields":fs
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});
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f.open();
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f.bind('submited', this.add_record_finish.bind(this, f));
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}
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async add_record_finish(f, event){
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f.dismiss();
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var resp = event.params;
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var desc = await resp.json();
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var w = await bricks.widgetBuild(desc);
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this.render();
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}
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update_record(){
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var record = this.select_row.user_data;
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var fields = this.get_hidefields();
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for (var i=0; i< this.fields.length; i++){
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var f = bricks.extend({}, this.fields[i]);
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f.value = record[f.name];
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fields.push(f);
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}
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var f = new bricks.ModalForm({
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"width":"90%",
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"height":"70%",
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"submit_url":this.editable.update_data_url+'?id=' + record.id,
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"fields":fields
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});
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f.open();
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f.bind('submited', this.update_record_finish.bind(this, f));
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}
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update_cancel(f){
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f.dismiss();
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}
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async update_record_finish(form, event){
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var resp = event.params;
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var desc = await resp.json();
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var w = await bricks.widgetBuild(desc);
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if (desc.widgettype == 'Message'){
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await this.renew_record_view(form, this.select_row);
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}
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}
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delete_record(row, record){
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var conform_w = new bricks.Conform({
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target:this,
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title:'Delete conform',
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message:'Are you sure to delete is record?'
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});
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conform_w.bind('conformed', this.delete_record_act.bind(this, row, record));
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conform_w.bind('discard', conform_w.dismiss.bind(conform_w));
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}
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async delete_record_act(){
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var id = this.select_row.user_data.id;
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var url = this.editable.delete_data_url + '?id=' + id;
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var hc = new bricks.HttpJson();
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var desc = await hc.get(url);
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var w = await bricks.widgetBuild(desc);
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if (desc.widgettype == 'Message'){
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this.scrollpanel.remove_widget(this.select_row);
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this.select_row = null;
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this.render();
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}
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}
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async load_previous_page(){
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if (this.loading){
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bricks.debug('this.loading is set, do not thing');
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return;
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}
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var running = new bricks.Running({target:this});
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this.loading = true;
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try {
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var d = await this.loader.loadPreviousPage();
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if (d){
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this.dataHandle(d);
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var total = this.container.dom_element.scrollHeight - this.container.dom_element.clientHeight;
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this.container.dom_element.scrollTop = d.pos_rate * total;
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} else {
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bricks.debug(this.loader, 'load previous page error');
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}
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} catch (e) {
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bricks.debug('e=', e);
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}
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this.loading = false;
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running.dismiss();
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}
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async load_next_page(){
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if (this.loading){
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bricks.debug('this.loading is set, do not thing');
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return;
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}
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var running = new bricks.Running({target:this});
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this.loading = true;
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try {
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var d = await this.loader.loadNextPage();
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if (d){
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this.dataHandle(d);
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var total = this.container.dom_element.scrollHeight - this.container.dom_element.clientHeight;
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this.container.dom_element.scrollTop = d.pos_rate * total;
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} else {
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bricks.debug(this.loader, 'load next page error');
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}
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} catch (e){
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bricks.debug('error happened', e);
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}
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this.loading = false;
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running.dismiss();
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bricks.debug('load_next_page() finished');
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}
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delete_page(page){
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var items = this.dom_element.querySelectorAll('[data-page="' + page + '"]');
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for (var i=0;i<items.length;i++) {
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var w = items[i].bricks_widget;
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this.container.remove_widget(w);
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}
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}
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}
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bricks.Factory.register('DataViewer', bricks.DataViewer);
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