我用角1.5看着樹視圖的下面的例子:link如何動態調整角度ui網格Treeview中的高度?
在CSS部分它規定了.grid一個固定的高度如下:
.grid {
width: 500px;
height: 500px;
}
是否有動態調整這一種方式根據點擊樹節點的方式展開高度?
treeview的相關文檔是here。但是,在那裏顯示的示例也有一個固定的高度,我想將其更改爲動態高度。
我用角1.5看着樹視圖的下面的例子:link如何動態調整角度ui網格Treeview中的高度?
在CSS部分它規定了.grid一個固定的高度如下:
.grid {
width: 500px;
height: 500px;
}
是否有動態調整這一種方式根據點擊樹節點的方式展開高度?
treeview的相關文檔是here。但是,在那裏顯示的示例也有一個固定的高度,我想將其更改爲動態高度。
我設法通過實現動態更改容器高度的方法來找到解決方案。在控制器中,我第一次initalize將在稍後JS使用的變量,並使用NG風格的模板:
//===================================================
// Initalize height that will be altered later based
// on tree expand/collapse events
//===================================================
var row_height = 30; // use this to set height everywhere
$scope.height = row_height;
$scope.height_px = row_height + 'px'; // used in template with ng-style
然後同時初始化樹視圖網格選項,可以row_height參考。我們還添加了邏輯的選項添加或扣除基於rowExpanded
和rowCollapsed
事件高度:
$scope.gridOptions = {
rowHeight: row_height,
enableSorting: true,
enableFiltering: false,
//.....continue other options.....
onRegisterApi: function(gridApi) {
$scope.gridApi = gridApi;
// Add container height for row expanded
$scope.gridApi.treeBase.on.rowExpanded(null, function(row) {
addHeight(row.treeNode.children.length);
});
// Deduct container height for row collapsed after considering
// all child node expanded state
$scope.gridApi.treeBase.on.rowCollapsed(null, function(row) {
// get number of children that are already expanded
var count = row.treeNode.children.length;
for(var i=0; i < row.treeNode.children.length; i++) {
count += getChildCount(row.treeNode.children[i]);
}
deductHeight(count);
});
}
}
我們再添加所需要的addHeight()
,deductHeight()
和getChildCount()
工作方法來控制:
// Method to add height of container dynamically based on number of rows
var addHeight = function (num_rows) {
$scope.height += num_rows * row_height;
$scope.height_px = $scope.height + 'px';
};
// Method to deduct height of container dynamically based on number of rows
var deductHeight = function (num_rows) {
$scope.height -= num_rows * row_height;
if($scope.height <= 0) {
$scope.height = row_height;
}
$scope.height_px = $scope.height + 'px';
};
// Method to get count of expanded child rows for a given node (used recursively)
var getChildCount = function (node) {
var count = 0;
if(node.state == 'expanded') {
// change the state to collapsed for all child nodes
node.state = 'collapsed';
count += node.children.length;
for(var i=0; i < node.children.length; i++) {
count += getChildCount(node.children[i]);
}
return count;
} else {
return 0;
}
};
請注意,當我們摺疊節點時,我們遞歸地獲取節點數。我們還將子節點的狀態更改爲摺疊狀態,以便下次正確計算高度。
最後在模板中,我們需要引用$ scope.height_px,它給出了容器的動態高度。我們通過設置ng-style="{ 'height': height_px }"
如下做到這一點:我在這之後遇到
<div id="gridTree-1" ui-grid="gridOptions" class="grid" ui-grid-tree-view ui-grid-auto-resize ng-style="{ 'height': height_px }"></div>
的一個問題是,鼠標的滾動停止時,它被放置在網格的頂部工作。這個問題顯然有建議的解決方案here。但是,實際問題涉及禁用ui-grid.js
中的滾動功能。在版本3.1.1行2721中讀取event.preventDefault();
。我不得不將這一行註釋掉以便滾動再次正常工作。
要設置手動高度的UI網格樹視圖,當用戶展開或摺疊父行
結賬onRegisterApi:
var rowtpl = '<div ng-repeat="(colRenderIndex, col) in colContainer.renderedColumns track by col.colDef.name" class="ui-grid-cell" ng-class="{ \'disabled\': true, \'ui-grid-row-header-cell\': col.isRowHeader }" ui-grid-cell></div>';
$scope.gridOptions = {
enableColumnResizing: true,
enableSorting: false,
enableColumnMenus: false,
showTreeExpandNoChildren: false,
enableExpandAll:false,
enableTreeView: true,
rowTemplate: rowtpl,
enableFiltering: true,
enableRowSelection: true,
enableRowHeaderSelection: false,
enableHorizontalScrollbar: 0,
multiSelect: false,
modifierKeysToMultiSelect: false,
noUnselect: true,
onRegisterApi: function (gridApi) {
$scope.gridApi = gridApi;
//Row Collapse Set Height
$scope.gridApi.treeBase.on.rowCollapsed($scope, function (row) {
gridHeight();
});
//Row Expand Set Height
$scope.gridApi.treeBase.on.rowExpanded($scope, function (row) {
gridHeight();
});}}
現在看功能gridHeight(),您可以輕鬆地設置身高
值function gridHeight() {
//timeout function is used due to late updation of $scope.gridApi.core.getVisibleRows()
$timeout(function() {
// 40: header height
// 30: height for each row
const visibleRowHeight = 40 + (30 * $scope.gridApi.core.getVisibleRows().length);
if (visibleRowHeight > 280) {
vm.totalHeight = 280;
}
else {
vm.totalHeight = visibleRowHeight;
}
//Adjust your height max and min accordingly like i did
}, 200);
}
查看:
<div id="grid" ui-grid="gridOptions" class="grid" ui-grid-tree-view ui-grid-tree-row-header-buttons ui-grid-cellNav ui-grid-auto-resize ui-grid-resize-columns ui-grid-selection ng-style="{height: vm.totalHeight+'px'}"></div>