vaadin8

问题 I'd like to know if it's possible to navigate through Vaadin grid or treegrid and select an item using only keyboard arrow keys? From what i've seen while testing the components, the default behavior seems to be either to move only to one specific cell in grid or to a specific row in treegrid. Selection can be achieved if the user presses spacebar. I've tried to add a shortcutListener to grid but it doesn't seem to work with arrow keys. And the grid scrollbar doesn't move with the selected

问题 When clicking a cell in a Vaadin 8 Grid that contains component like VerticalLayout row does not get selected (using Vaadin 8.1.5). If the component does not fill the whole cell then clicking the unused area in cell makes the row selected. I have been researching how could the click on component be forwarded to the cell click listener but have not get any grip yet on that. Guess it is even not the best way to do it. What would be the solution? 回答1: I provide my own current solution as an

问题 Problem: I have a Vaadin 8 Grid , and I can't find a way to extract the items inside of it. Description: Starting from a grid Grid<Pojo> myGrid = new Grid<>(); I've configured it so it can take data with lazy loading. myGrid.setDataProvider( (sortOrd, offset, limit) -> dao.getAllFiltered(offset, limit, filter), () -> dao.getCountAllFiltered(filter) ); At this point, I want to extraxt all the items from the grid (for putting that into an excel), something like List<Pojo> list = myGrid.getItems

问题 Problem: I have a Vaadin 8 Grid , and I can't find a way to extract the items inside of it. Description: Starting from a grid Grid<Pojo> myGrid = new Grid<>(); I've configured it so it can take data with lazy loading. myGrid.setDataProvider( (sortOrd, offset, limit) -> dao.getAllFiltered(offset, limit, filter), () -> dao.getCountAllFiltered(filter) ); At this point, I want to extraxt all the items from the grid (for putting that into an excel), something like List<Pojo> list = myGrid.getItems

问题 Problem: I have a Vaadin 8 Grid , and I can't find a way to extract the items inside of it. Description: Starting from a grid Grid<Pojo> myGrid = new Grid<>(); I've configured it so it can take data with lazy loading. myGrid.setDataProvider( (sortOrd, offset, limit) -> dao.getAllFiltered(offset, limit, filter), () -> dao.getCountAllFiltered(filter) ); At this point, I want to extraxt all the items from the grid (for putting that into an excel), something like List<Pojo> list = myGrid.getItems

问题 Problem: I have a Vaadin 8 Grid , and I can't find a way to extract the items inside of it. Description: Starting from a grid Grid<Pojo> myGrid = new Grid<>(); I've configured it so it can take data with lazy loading. myGrid.setDataProvider( (sortOrd, offset, limit) -> dao.getAllFiltered(offset, limit, filter), () -> dao.getCountAllFiltered(filter) ); At this point, I want to extraxt all the items from the grid (for putting that into an excel), something like List<Pojo> list = myGrid.getItems

问题 I'm trying to implement session reinitialization for Vaadin for security reasons (Session_fixation) but failing to do so. I am using Vaadin 8.9.4 with @Push and WildFly 8.1.0.Final. Also using the Vaadin heartbeat and @PreserveOnRefresh annotation. I have tried using the VaadinService.reinitializeSession but with no luck. App just hangs, refresh will throw me back to login screen (with new JSESSSIONID though). Here's an example what I have tried: VaadinService.reinitializeSession

问题 I want to ask how to correctly copy some text to clipboard in vaadin 8 java web application. I have found solution that works in Chrome and IE, but does not work in Firefox. The Firefox is always saying error " document.execCommand(‘cut’/‘copy’) was denied because it was not called from inside a short running user-generated event handler. " in console. The only way how to get Firefox to copy text to clipboard is by some user-triggered event handler (click or focus events). But I have failed

问题 I want to ask how to correctly copy some text to clipboard in vaadin 8 java web application. I have found solution that works in Chrome and IE, but does not work in Firefox. The Firefox is always saying error " document.execCommand(‘cut’/‘copy’) was denied because it was not called from inside a short running user-generated event handler. " in console. The only way how to get Firefox to copy text to clipboard is by some user-triggered event handler (click or focus events). But I have failed

问题 I am trying to enter timestamp using DateTimeField but in my entity i am having java.sql.timestamp . Converting datetimefield to timestamp is giving error ConversionClass package com.vaadin.convertor; import java.sql.Timestamp; import java.time.LocalDateTime; import com.vaadin.data.Converter; import com.vaadin.data.Result; import com.vaadin.data.ValueContext; @SuppressWarnings("serial") public class StringTimestampConvertor implements Converter<LocalDateTime, Timestamp> { @SuppressWarnings(