I am new to this Technology.
I want to display Accessory View(Right Side Arrow Button) in Flex List View.
How can I do this.?
I assume by accessory view you mean something like this; where you are displaying details on the selected item in the list.
First create a List with a custom itemRenderer. The itemRenderer should display the item's label and the arrow.
Second, create a component to display the detail from the selected item in the list. The implementation of this component will depend greatly on the data you want to display.
Third, listen to the change event of the List, and when the item changes, update the values being displayed in your "accessory" component.
Related
I searched SO for the best solution to this question, found several clues, while not fully satisfying IMO. So I post below my no-code solution.
The goal is to have, as in Finder or other native applications, a contextual menu on the header bar of a table or outline, allowing to select which columns are visibles.
In IB storyboard, add all the columns you need into the table view.
You may set some of them hidden by default.
Ctrl-drag each column from the IB document outline view to the scene controller code view, in order to automatically create weak IBOutlets for each column. The purpose is to be able to target a given column in bindings.
__weak IBOutlet NSTableColumn *my_column;
Add a menu to the storyboard scene with the same number of item as the columns you plan to hide. You do not have to give title to menu items (see next point).
For each menu item, in the bindings pane, add two bindings :
Bind the item title to the column title property through your controller outlet : controller_name.my_column.title. This way the menu item will stay in sync with column title, should the code need to change it.
THIS ONE IS KEY : Bind the value of the menu item to the column hidden property : controller_name.my_column.hidden. Add a NSNegateBoolean transformer for the menu tick to be meaningful.
Attach the menu to header menu : ctrl-click on the table header view and make connection from the menu outlet to the menu created in #3.
That it's. No code beside the IBOutlets added in #2.
The bindings being two ways, un-ticking a menu item will hide the bound column. Also, if the code hides a column the bound menu item will reflect its state.
Hello everyone.
I have a tree of items as shown on image above (Items tree).
I need to display this tree in a way that is shown on an image (Views).
It has two views, Tree View and List view. Tree view should display the whole tree of items, and list view should display properties for a selected item in a tree view. (On an image it displays properties for a cat item)
The way it is implemented right now is displayed at "Current implementation" part of an image. TreeModel contains item tree, and when you click on an item in a TreeView, current item is sent to a ListModel to display it's properties.
The issue thagt i encounter here is that in both views items are editable. In a tree view you can edit item's names, and this change should appear in a list view as well. The same goes for opposite direction. Changing name of a Cat item should reflect on a treeView cat item.
Since it is two different models, the change is made only when you hover over another view.
What i currently did is for a changed item in one of views, i search for a item in a another view via QModelIndex::match() and then just update that part of a view via emit dataChanged(). I am not sure this a good way. So if maybe you can give me some ideas on how this can be done better.
Thank you.
You should have only one model. The QAbstractItemView::setRootIndex method is all you need: you can set the current item in the tree as the root for the table view. Alternatively, you could use a proxy viewmodel to adapt the data for display in a particular form.
I have a viewstack with two tabs.
In one of them there is a data grid shows a list of notes. The other one is includes a form that can edit notes or crates new note. I want the user to be able to add new note or edit existing note when clicks an item in data grid. I mean when user clicks an item the viewstack must become editor.
You can use the "selectedIndex" or "selectedItem" property on the viewstack to switch the active view. In your case, an event should be dispatched that bubbles up to the component containing the viewstack. When it arrives, the viewstack's active view can then be changed.
I want to add specific images to a datagrid row, depending on the data displayed on that row. These images need to be functional buttons with click handlers and everything.
For example, if a row displays status of a certain element, like "Editable" then the image displayed in the cell next to it needs to be a green flag, if it isn't Editable then I red flag should appear.
If you just need images and click handlers, there is an option to embed icons inside a datagrid.
Also, for a datagrid ,clicking on any row triggers the click event,the handler to which will give you datagrid.selectedIndex as the index of the row you clicked, which you can then use to get the data in that specific row and according to the data do a specific action you need.
To render icons in datagrid, you might want to check for labelFunction attribute, which allows you to specify a function , each time data in a datagrid row is filled, which yuo can use to determine the icon you would need the datagrid to render and show to the user.
Qt 4.5 (PyQt 4.6.1)
I'm looking for a widget similar to a QComboBox that automatically filters its entries to the ones starting with the input in the text field. There are around 300 items in the combo box.
I've tried two approaches:
QLineEdit with QCompleter
Advantages
Filtering the items works.
Disadvantages
Doesn't show a popup if the text field is empty.
Doesn't do inline completion.
Allows to insert items not in the list.
Editable QComboBox with insertion set to no
Advantages
Nice popup
Completes inline in the text field.
Disadvantages
No filtering
Input is only possible in either the text field or the popup. Clicking on the popup doesn't select the best-matching item in the popup.
What I need
A popup to select the items.
Slow tippers should be able to start tipping the name of an item and the popup switches to the best matching one.
Preferably I should filter the items so that only partially-matching items are shown.
Concerning you first try with QLineEdit, you can set the completionMode to do it inline.
For your second try, you can add a QCompleter object to you QCombBox in order to filter your items as you want.The QCompleter member of the QComboBox is to offer an easy way to use QCompleter.
Anyway, if you are not satisfied with this method, you can manage a QCompleter object by yourself. This allows you to choose how item list is display (using any views) and to define items order in the list. See basic QCompleter details.