dojo小例子（3）DataGrid对静态数据的增删

红太狼 2022-08-25 09:28 167阅读 0赞

<!DOCTYPE html>
    <html >
    <head>
    
    	<link rel="stylesheet" href="../dojo-release-1.9.1/dijit/themes/claro/claro.css">
    	<style type="text/css">
    @import '../dojo-release-1.9.1/dojox/grid/resources/claroGrid.css';
    
    /*Grid needs an explicit height by default*/
    #gridDiv {
        height: 15em;
    }
    	</style>
    	
    	<script src='../dojo-release-1.9.1/dojo/dojo.js'></script>
    	
    	<script>
    	
     require(['dojo/_base/array', 'dojo/_base/lang', 'dojo/_base/event', 'dojo/on', 'dojox/grid/DataGrid', 'dojo/data/ItemFileWriteStore', 'dijit/form/Button', 'dojo/dom', 'dojo/parser', 'dojo/domReady!'],
      function(array, lang, event, on, DataGrid, ItemFileWriteStore, Button, dom, parser){
        parser.parse();
        /*set up data store*/
        var data = {
                  identifier: "id",
          items: []
        };
        var data_list = [
          { col1: "normal", col2: false, col3: 'But are not followed by two hexadecimal', col4: 29.91},
          { col1: "important", col2: false, col3: 'Because a % sign always indicates', col4: 9.33},
          { col1: "important", col2: false, col3: 'Signs can be selectively', col4: 19.34}
        ];
        var rows = 5;
        for(i = 0, l = data_list.length; i < rows; i++){
          data.items.push(lang.mixin({ id: i+1 }, data_list[i%l]));
        }
        store = new ItemFileWriteStore({data: data});
    
        /*set up layout*/
        var layout = [[
          {'name': 'Column 1', 'field': 'id', 'width': '100px'},
          {'name': 'Column 2', 'field': 'col2', 'width': '100px'},
          {'name': 'Column 3', 'field': 'col3', 'width': '200px'},
                  {'name': 'Column 4', 'field': 'col4', 'width': '150px'}
        ]];
    
        /*create a new grid*/
        grid = new DataGrid({
            id: 'grid',
            store: store,
            structure: layout,
            rowSelector: '20px'});
    
        /*append the new grid to the div*/
        grid.placeAt("gridDiv");
    
        /* attach an event handler */
        on(button2,'click',
        function(e){
            /* set the properties for the new item: */
            var myNewItem = {id: (++i), col1: "Mediate", col2: true, col3: 'Newly added values', col4: 8888};
            /* Insert the new item into the store:*/
            store.newItem(myNewItem);
        }
        );
        /* attach an event handler */
        on(button1,'click',
        function(e){
            /* Get all selected items from the Grid: */
            var items = grid.selection.getSelected();
            if(items.length){
                /* Iterate through the list of selected items.
                   The current item is available in the variable
                   "selectedItem" within the following function: */
                array.forEach(items, function(selectedItem){
                    if(selectedItem !== null){
                        /* Delete the item from the data store: */
                        store.deleteItem(selectedItem);
                    } /* end if */
                }); /* end forEach */
            } /* end if */
            event.stop(e);
        }
        );
    
    
        /*Call startup() to render the grid*/
        grid.startup();
    });
     require(['dojo/parser', 'dojo/domReady!'],
    		  function(parser){
    		    parser.parse();
     });
     
    	</script>
    </head>
    <body class="claro">
        <p>
        This example shows, how to add/remove rows
    </p>
    <div id='gridDiv'></div>
    
    <p>
      <button data-dojo-id='button2' id='button2'>
          Add Row
      </button>
    
      <button data-dojo-id='button1' id='button1'>
          Remove Selected Rows
      </button>
    </p>
    </body>
    </html>