uas-platform/frontend/uas-web/overrides/grid/column/Column.js

Ext.define('uas.override.grid.column.Column', {
    override: 'Ext.grid.column.Column',

    initComponent: function() {
        var me = this;
        // Preserve the scope to resolve a custom renderer.
        // Subclasses (TreeColumn) may insist on scope being this.
        if (!me.rendererScope) {
            me.rendererScope = me.scope;
        }
        if (me.header != null) {
            me.text = me.header;
            me.header = null;
        }
        if (me.cellWrap) {
            me.tdCls = (me.tdCls || '') + ' ' + Ext.baseCSSPrefix + 'wrap-cell';
        }
        // A group header; It contains items which are themselves Headers
        if (me.columns != null) {
            me.isGroupHeader = true;
            me.ariaRole = 'presentation';
            if (me.dataIndex) {
                Ext.raise('Ext.grid.column.Column: Group header may not accept a dataIndex');
            }
            if ((me.width && me.width !== Ext.grid.header.Container.prototype.defaultWidth)) {
                Ext.raise('Ext.grid.column.Column: Group header does not support setting explicit widths. A group header either shrinkwraps its children, or must be flexed.');
            }
            // The headers become child items
            me.items = me.columns;
            me.columns = null;
            me.cls = (me.cls || '') + ' ' + me.groupHeaderCls;
            // A group cannot be sorted, or resized - it shrinkwraps its children
            me.sortable = me.resizable = false;
            me.align = 'center';
        } else {
            // Flexed Headers need to have a minWidth defined so that they can never be squeezed out of existence by the
            // HeaderContainer's specialized Box layout, the ColumnLayout. The ColumnLayout's overridden calculateChildboxes
            // method extends the available layout space to accommodate the "desiredWidth" of all the columns.
            if (me.flex) {
                me.minWidth = me.minWidth || Ext.grid.plugin.HeaderResizer.prototype.minColWidth;
            }
        }
        // header始终居中，与body的align无关
        me.addCls(Ext.baseCSSPrefix + 'column-header-align-center');
        // me.addCls(Ext.baseCSSPrefix + 'column-header-align-' + me.getMappedAlignment(me.align));
        // Set up the renderer types: 'renderer', 'editRenderer', and 'summaryRenderer'
        me.setupRenderer();
        me.setupRenderer('edit');
        me.setupRenderer('summary');
        // Initialize as a HeaderContainer
        me.callParent();
    }
});