multipleselection

问题 I want to ask, how can I forward to edit mode, where I can to select multiple rows, as in Messages app, when you click on top right button "Select", when you can choose multiple messages by tapping on circles. Like this: I searched a lot, really, but couldn't find anything. Can anyone help me? Some advices 回答1: Set tableView.allowsMultipleSelectionDuringEditing = true Screenshot Demo code class TableviewController:UITableViewController{ override func viewDidLoad() { super.viewDidLoad()

问题 I want to ask, how can I forward to edit mode, where I can to select multiple rows, as in Messages app, when you click on top right button "Select", when you can choose multiple messages by tapping on circles. Like this: I searched a lot, really, but couldn't find anything. Can anyone help me? Some advices 回答1: Set tableView.allowsMultipleSelectionDuringEditing = true Screenshot Demo code class TableviewController:UITableViewController{ override func viewDidLoad() { super.viewDidLoad()

问题 I'm currently selecting multiple rows in a model tree with the code below. But it can be really slow in big sessions with loads of nodes. I suspect this is not very efficient as it's probably selecting the rows one by one. Is there anything that could speed things up - for example don't refresh while selecting until the last one or select all in one call? selectionModel = self.tree.selectionModel() selectionModel.clear() for node, i in self.tree.model().iterNodeAndIndexs(): if nodeCondition:

问题 this question might have been asked before, but I could not find. because I was not able to ask correctly all situations. so pardon me if it is a repeated question. I have 2 tables: tb1 - categories tb2 - tasks I want to select all tasks and quantity of tasks by each category. What I did is this: SELECT category_id, category_title, (SELECT count(task_id) FROM tasks_of_app WHERE category_id ) AS counted_tasks FROM categories_of_app but I get all tasks' quantity for each category. I can't use

问题 I'm trying to do something with a multiple selection. I wanna add some text before every selected paragraph but, when I select multiple discontinuous paragraphs, if I do Selection.Paragraphs.Count I always get "1". How could I work with all paragraphs apart? Example: Paragraph1(Selected first) Paragraph2 Paragraph3(Selected second) What I got when I try to add some text at the beginning of these paragraphs: Paragraph1 Paragraph2 TEXTParagraph3 What I really want to obtain: TEXTParagraph1

问题 Hello all m having multisectioned tableview design like want to apply filter based on the selected rows in which all the selection is in OR condition except the searchcriteria section(this section is mandatory),now what i want to achieve is want to save all the selection and filter the data when user clicks on Apply button.How to achieve this.Please help. note:i dont want to use any database coz in future i have to post all the selected values using POST method. Code : ViewController.swift

问题 I am using a Windows Forms TreeView control in my program. I would like to allow the user to select multiple nodes at the same level by dragging their mouse pointer around (also called a "lasso" selection). I don't think a standard TreeView allows that. My question is what would be the best way to achieve this? Do I have to write custom selection behaviour of my own in perhaps a custom or derived control? Where do I start? I don't need a detailed explanation. Just a small nudge in the right

问题 I have a Facelets page with a <h:dataTable> . In each row there is a <h:selectBooleanCheckbox> . If the checkbox is selected the object behind the corresponding row should be set in the bean. How do I do this? How to get the selected rows or their data in a backing bean? Or would it be better to do it with <h:selectManyCheckbox> ? 回答1: Your best bet is to bind the h:selectBooleanCheckbox value with a Map<RowId, Boolean> property where RowId represents the type of the row identifier. Let's

问题 I have a p:dataTable with selectionMode=multiple which binds the rowSelect and rowUnselect event: <p:dataTable widgetVar="myDatatable" selectionMode="multiple" selection="#{myBean.selection}"> <p:ajax event="rowSelect" listener="#{myBean.onSelect}" /> <p:ajax event="rowUnselect" listener="#{myBean.onUnselect}" /> ... (columns) </p:dataTable> Selecting rows works fine, myBean.selection is updated and myBean.onSelect() is invoked. Now I wanted to add buttons to (un)select all items to my

问题 I have a customized GridView populated by a customized BaseAdapter. The selection mode of the GridView is MultiChoiceModal. I want to control which items can be activated when long clicked while still ensuring they respond to (short) click events. BaseAdapter has a method called isEnabled , the perfect solution would be if it had a method isActivatable that behaved analogously. The next best solution would be to intercept long clicks and pass them along to the default handler only when