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Well, hello, dear friends.



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And here we are in the next video, what are we going to do?



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Well, we're going to handle them, modify and delete options for an employee.



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So, for example, if you right click around the table will get a context menu, right, containing



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two actions, which would be delete and modify.



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So this is going to be shown at the position of the cursor, because we've clicked it right now in order



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to be able to display that.



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We have to install something called event filter.



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And to override the method which enables us to create the context menu at a specified position for the



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table with you.



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So let me show you what I mean by actually installing the event filter, self-taught UI table widget.



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Now, here, we need to access review port and install event filter of self.



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Now we need to override the method.



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So let's go to manage employee and to find that method event filter.



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Deaf event filter, which receives as arguments and objects and an event.



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So now the arguments represent the following.



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The object will be the viewport from the table widget and event will be the event which has.



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Subsequently occurred.



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For example, mouse button press or any other event that can occur on that specific viewport.



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Now we've cleared that up, we'll just make sure that we can check if the object so if object is equal



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to the viewport from the table widget, self-taught UI event type is equal queue event, mouse button



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press.



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Yes.



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Yes, okay.



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If this condition is satisfied and we can check the mouse button, press is actually right click because



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we don't need to display the context menu of the left click in point of fact.



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If event button equals cute, right button.



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So we have to stop the show at which the current cursor is positioned, right, so let's say.



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Index is itself, not UI dot table widget, dot index at event.



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That position.



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In case we are not their position, which is valid, for example, we don't have enough rose.



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Click on the empty space between or below the rows from the table, whatever.



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The index will not be valid, of course, and we wouldn't be able to modify it or lead anything.



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So let's just make sure that.



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So we're going to check to see and make sure that index is valid.



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Right.



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So if index is valid, pass.



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In which case we can display the context menu.



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Now, let's just pass this and include everything that will need for the code that we just wrote, so.



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From Pie Cuty five dot curry core.



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Now we will need to import the event cuty because we access Cuddie of the right click and queue object.



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Now, if you do forget to import all of these, there's really not much of a problem because you are



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going to get an error when you execute the program and it's going to tell you exactly what you need



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to import.



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But you can always preempt that error.



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Some people just don't like seeing errors.



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OK, so we need to restart returns something, and that's the main window.



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Return Keu main window DOTT event, filter's self object event.



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And as arguments, we can pass this subject of the object and the event, which is a Devall behavior



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for the event.



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But it feels like we're not going to really be modifying anything in that specific return code.



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So let me just go check it out.



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I'm right.



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Clicking this row.



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Nothing happens, of course.



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That's right.



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Because we haven't actually written any code for that.



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So if the index is Vallon, let's create some actions that we want to delete.



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So delete action is a cue action.



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So this has it text delete, it also receives a parent, which is self.



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Now, when the delete action is clicked because it's going to be a context menu with two so-called buttons,



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we're going to need something to happen.



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So we need to correct the no slot mechanism.



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Have you done that before?



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I don't know.



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Let's do it now.



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Delete action, dot triggered.



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Because this is not conflict.



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This is something different from Q action.



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Dot connect and create the function self dot delete action triggered.



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So let's create that right here.



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Define and pass for now, and the other action we want to create is modify actions, so modify action



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is equal to Q action, modify as a text and self as a parent.



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And modify action triggered connect, self-taught, modify, action trigger.



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And create that function also to find and pass.



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So now that we have the actions created, we can create the context menu.



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Don't let's forget about that.



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So context menu is equal to a menu.



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Which receives this parent.



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And we have to add the actions and execute the context menu at the time that the right button gets clicked.



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Right.



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So context menu, add action, delete action.



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Context menu, add action, modify action.



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And so execute it, just run him.



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Context menu, dot execute.



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And as an argument, we'll need to pass a global position where we are right now, and for that we'll



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have to call the event that global position.



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So this is going to return the position where the mouse is right at the moment of the right click.



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So I would just see what happens in the program.



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Right click, and you can see that here are the delete and modify option showing up.



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So even though this Rossana highlighted the context menu is showing, right?



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So when we click down, well, nothing happens because we were just passing.



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When the function calls, but let's try to create something out, let's say print, delete.



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Just to know that the signal SWAT mechanism is working and print modifying.



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So let's run the program, tried out again, and there's a result.



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Now we can try to trigger this action.



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But actually, in this program, we're going to use the modify action for adding an employee leave to



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our employee.



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But really what's important to us is that we need to have that information for one specific user.



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So the current function, which connects the modify action to the modify action trigger is not have



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one additional parameter which can hold information about the user.



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Right.



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So, for example, the index that Roe, which identifies a user from our table.



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That's what we need.



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So now in order to solve this problem, we can just set the object name for modify action.



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So let's just.



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Well, let me just show you how.



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Modify action that set object name and the object name will be set to a string of index dot row, which



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will be the row index for this specific mouse cursor.



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OK, so now in the modify action trigger function, we can still print, modify.



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And in the slot, we can identify the signal, which is the modify action, which has sent the event



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to call the slot.



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In order to do that, we can access row equals queue object center of self-taught object name.



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Because we need the object name from the modify action.



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OK.



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Hey.



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Now we need to cast this to an end because, well, that's the string word.



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Now we can get the idea easily because we have the table widgets, so self-doubt, Eweida table widget



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that item at that specific row.



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And we know that the idea is always placed at the Xeros column, that text.



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And now what we need to do is just create a window and instantiate it by passing the constructor an



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additional parameter which would be ready.



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So self-taught employee info window.



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Because that's how we're going to call our new window from the leave screen is new employee info window,



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which has an argument the I.D. and all we need to do is show it.



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Now we need to import it.



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So from leave screen import employee info window.



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Now is created, so.



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Class employee info window.



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Which inherits from Kudi Widget's.



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Main window.



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And let's define the init function.



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Death in itself.



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And we have to call the super constructor, so that means employee info window and self-taught in it.



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Now we can initialize the UI, so.



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Self-taught UI is equal to a UI main window.



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Self-taught UI taught set up UI of self.



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Now need to receive the I.D. as well, so that's an argument, self-taught ID is an I.D..



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Very cool, so now let's go back to manage employees.



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And that should be all done now, so we'll.



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Run this and modify see the windows shown up.



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Very cool.



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So that's it.



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We've now created a context menu where we have a delete and modify action.



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So I want to see in the next lesson we'll continue from here.



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All right.