unselect | 易学教程

How to select just one row, prevent to unselect item in singleselect mode

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问题 My question is very simple but I really didn't find any solution here. I have a Table setSelectable(true), setMultiselect(false), setImmediate(true). It works fine by first click and moving through the table using arrows. But if I click again to the row already having been selected, then it becomes unselected. How to prevent it? I'd like to have kept just one row always selected. 回答1: As from the Vaadin Book here: If the user clicks on an already selected item, the selection will deselected

How to select just one row, prevent to unselect item in singleselect mode

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jQuery UI tabs, select/unselect (collapse) events

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问题 I am using jQuery UI 1.8.5 tabs plugin, with collapsible : true configuration. I need to call a function after a tab is collapsed to add a css class. Does anyone know how? 回答1: You could check if the ui-tabs-selected class exists on click. Assuming you're using standard markup: // in your click event var selected_exists = $('#yourTabBox') .children('ul.ui-tabs-nav') .children('li.ui-tabs-selected') .length; if (selected_exists) { // Nothing is collapsed } else { // collapsed } This is perfect

can't clear WPF ListBox.SelectedItems collection

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问题 I can't seem to get the SelectedItems collection of a data bound WPF ListBox to clear. I've tried calling ListBox.SelectedItems.Clear(), i've tried setting the SelectedIndex to -1, setting the SelectedItem to null and calling ListBox.UnselectAll(). While debugging it appears that either the assignments don't take or something is resetting the SelectedItems collection, but I'm not sure what. I put a breakpoint in the SelectionChanged callback and it never gets hit unexpectedly yet the

How to select or unselect all checkboxes in JQuery Mobile?

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问题 I have several collapsible check-boxes, and am trying to check/uncheck all the boxes within that section. HTML Currently when I click on the main checkbox, it simply opens and closes the collapsible dialog. <li data-role="collapsible" id="educationlayers"> <h3> <input type="checkbox" name="education" id="education" class="layers"/> <label for="education">Education</label> </h3> <fieldset data-role="controlgroup"> <input type="checkbox" data-mini="true" name="education" id="daycare" class=

Android Tab Layout tutorial?

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问题 I want to be able to assign different images to my tabs in the TabLayout control depending on whether the item is selected or not. I followed the tutorial on the Android site but they made the example with just one image and for it it works. But it doesn't work for the rest of the tabs. How can I make it work? This is my code: The main activity: public class Main extends TabActivity { private Resources res; private TabHost tabHost; private TabHost.TabSpec spec; // Resusable TabSpec for each

unselecting and reselecting a TreeViewItem in a TreeView

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问题 I've got the following problem: In my TreeView i added unselect functionality by calling my own deselect()-method when the user clicks the TreeView but not a TreeViewItem. Here is my TreeView method: public void deselectAll() { TreeViewItem item = SelectedItem as TreeViewItem; if (item != null) { this.Focus(); item.IsSelected = false; } } My problem is, that i can't reselect a TreeViewItem after i unselected it. I've read, that focusing the TreeView itself should solve this problem, but it's

'Unselect' a tab in a TabHost

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问题 I have a TabHost holding 5 tabs. As far as I can see, there has to be one tab selected at all times. I need a way to unselect all my tabs so none will be selected. If the tabhost is meant by general to have one tab selected at all times, how can I make it appear (UI speaking) as if the tab isn't selected? 回答1: This is not possible AFAIK. but yes,you can set the selected tab's color to look like it is unselected and set a blank layout over it by managing a global variable when you make it

'Unselect' a tab in a TabHost

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I have a TabHost holding 5 tabs. As far as I can see, there has to be one tab selected at all times. I need a way to unselect all my tabs so none will be selected. If the tabhost is meant by general to have one tab selected at all times, how can I make it appear (UI speaking) as if the tab isn't selected? This is not possible AFAIK. but yes,you can set the selected tab's color to look like it is unselected and set a blank layout over it by managing a global variable when you make it 'unselected' and setting up normal layout when you want it to be shown normally to user. But this is kind of a

Unselect All CheckBoxes From Excel Workbook with VBA Macro

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问题 I have a workbook with over 100 checkboxes. They are form control checkboxes I would like to un-select them all at once that is set them to false. Sub clearcheck() ActiveSheet.CheckBoxes.Value = False End Sub This works for the active sheet. I would like this code to be for the whole workbook I have tried looking for the code and messing about with clearing the checkboxes but am none the wiser. I would really appreciate if some one could guide me thank you 回答1: If you have OLEObject-style (