I'm using a NSTextView with an NSAttributedString to display some links using the NSLinkAttributeName. I'm styling those links using the setLinkTextAttributes: method of NSTextView. However, I would like to give the user a visual feedback when he clicks the link, for example by changing the color of the link while the user pressed down the left mouse button. Is there an easy way to do that or do I have to use NSTextAttachment?
I don't think there is an easy way to do this if you want it to happen on the mouseDown event. If you can wait until the click is completed, then you can do it using the text view delegate method, textView:clickedOnLink:atIndex: to get the index of the clicked on link. You could then use that index to pass to the text storage method, attributesAtIndex:effectiveRange: to get the range of the link and finally, use setAttributes:range: to make whatever changes you want to the attributes of the link.
If you really need to do it on the mouseDown, then you'll have to subclass the text view and override mouseDown and maybe use something like characterIndexForPoint: to find out whether you've clicked on a link and respond as above.
Related
I have an NSTableView (URLs of songs) and QTMovieView elements. I need to create an action that will execute when previous/next buttons on QTMovieView will be pressed. what I need to do?
If you want to do custom things, don't use the QTMovieView's control bar. You'll have to make your own controls with their own actions. Those actions will do what you need them to do as well as tell the movie view to play/pause, seek, etc.
You can turn the control bar off on a QTMovieView. Since you appear not to be using the video portion of the movie view, however, you could get rid of it entirely, using your own controls.
I'm working on the details of a symbols pop up button, similar to what Xcode 3 at the top of its editor window.
My controller object is the delegate of the NSMenu that is shown when the NSPopUpButton is shown. I implement the two methods numberOfItemsInMenu: and menu:updateItem:atIndex:shouldCancel: to populate the menu right before it's about to be displayed.
However, the title and image of the selected NSMenuItem have to change each time the user changes the selection in the editor NSTextView, or makes changes to the text; just as is the case with Xcode.
The problem I'm having is when the user goes to click on the NSPopUpButton to display the NSMenu, the selected NSMenuItem and the item that should be selected do not match up, since the menu doesn't have the proper number of items yet.
I'm wondering if there is a way to control which NSMenuItem is initially highlighted and tracked when the user clicks to open the menu. As it stands, the first item it always highlighted and tracked or, if the user had previously selected a item, that item is highlighted and tracked.
I tried explaining as best I could, but here is a image illustrating my problem:
I want the highlighted item to be the same as the selected item when the user opens the menu. Any ideas?
I would use a NSPopupbutton - it can do what you want. maybe you even hide it?
I am not very sure that I understood your problem but If we can add tags to these menu Items.
e.g.
[mMenuItemOne setTag : 1];
[mMenuItemTwo setTag : 2];
[mMenuItemThree setTag : 3];
[mMenuItemFour setTag : 4];}
we can select any Menu item using
[_popUp selectItemWithTag: _selectedItem];
Just a hint not a full solution.
Try to post an NSMouseMoved event to your app right after the menu shown.
Main problem is here to detect the position of the item you want to be highlighted.
Just a starting point.
Have you tried this NSMenuDelegate method:Handling Highlighting
– menu:willHighlightItem:
NSMenuDelegate Protocol Reference
Also you can store the NSMenuItem index in some var to keep track of the selected item for later use.
I'm not sure, do you want to move the mouse selection highlight (the blue stuff) or the checkmark?
In general, the checkmark is the thing you want to change. You can do so from your validateMenuItem: method (or at any other time if your item is set not to take part in validation) using the -setState: method.
The blue highlight is an indicator of the user's keyboard input or mouse location, and you should not mess with it. Changing it does not make any sense, as it would be changed back the moment the user moves the mouse even a single pixel.
That said, you can set the selectedItem of the NSPopUpButton, which will cause the entire menu to be moved so the selectedItem is under the mouse (assuming the mouse just clicked the popup button).
If your menu delegate method is called after the pop up button has decided what item to select, you can't use it. Instead, you could probably set the selectedItem and menu of the popup button from a NSPopUpButtonWillPopUpNotification handler.
If that is also called too late, you'll probably have to subclass NSPopupButtonCell and do it in an override of -attachPopUpWithFrame:inView: (I think that's the spot that should also work when you don't click and just hit the space key while the popup button is selected).
I'm working with Xcode doing a Ipad app.
i simply want user to click anywhere on screen (not counting text fields) to perform some IBAction.I'm using an invisible button that covers my whole view.
Since I have some text fields in my view,i need to add this invisible button to the background of my user interface. I cant seem to find this option in the button attributes? any help?
Just set the button's type to custom.
Did you try setting the opacity of the button to zero?
I guess i got your point. You just want to put the UIButton(invisible) on the back of all the UITextField. The simple solution to this is open the Document Window in the IB. Now expand the view tree in the list view. Just drag your UIButton above the UITextFields and set the alpha value for the button in the property to be zero.
Hope this helps!!
iPad users don't "click". They "tap" or "touch".
In Interface Builder, I believe views are constructed with a z-index from top to bottom as they appear in the document window, so dragging your button so that it appears as the first subview of your main view should be a quick fix for this.
Have you considered other approaches? This doesn't sound like standard behaviour for an app and will probably cause havoc with anybody using Voice Over. What are you trying to accomplish?
How would make a Status Item when the actually button is clicked in the Menu Bar not in a drop down menu show or hide a window?
Sorry if this is a bit vague.
NSStatusItem supports the target/action mechanism like many other controls. I haven't used this myself -- I've only ever used an NSStatusItem with a menu attached -- so I don't know when the message is sent (i.e. when the mouse button is clicked or when it's released). If it doesn't do what you want by default, you would need a custom view like Daniel suggests.
To achieve this with NSStatusItem you need to create a custom view and replace the default NSStatusItem view by calling its "setView:" method.
You'll implement code in your custom view to react to mouse clicks by e.g. putting up a window. (You can use a button, or other standard views if it works best for you).
I'll warn you this is a bit tricky to get right. Lots of little nuances e.g. with getting the look of your custom view to look right in the menu bar. But this is the general approach you need to take if you want to override the default menu-prompting status item view.
I have an NSPopUpButton providing the NSMenu for a status item with a custom view. The popup button displays a list of links. When the user selects a link from the list, the link is displayed in the user's browser (in the background).
Naturally, the menu closes every time the user selects a link.
I would like to change this: I want the menu to stay open while the user clicks on various links, all of which can be opened in the background. The menu can then go away when the user clicks elsewhere.
How can this be accomplished? Should I subclass NSMenuItem and intercept the mouse clicks somehow? Overlay a transparent NSView on the popped-up menu and, again, intercept the clicks somehow? I make these suggestions blithely, but I would have trouble implementing either of these...pointers to the right methods for override would be appreciated.
Instead of using a menu, one might use a collapsible box.I have seen that in many apps ( also provided by Apple) , so I guess this is the recommended style guide for multiple selections.
The collapsible box expands when you click the disclosure button, and it gives free all items desired - like a tableview with checkboxes.
Views below this box must move down in this case, not to interfere with the box.
Clicking again on the disclosure button will shrink the box back to its origin. The effect is similar to closing a menu.
Usually you should not bend a control too far past it's original intent. Users expect pop up buttons to close after making a selection. I don't think you should, or can, force NSPopUpButtonCell to behave in this way. If you do, you'll be subclassing and modifying the control so heavily that it might change/break with a future version of Mac OS X. You'd also have to worry about the usability problem of users thinking the menu will close after making a selection.
You might consider writing you're own subclass of NSView to work like the menu button you're describing. After the user clicks on the button. You'll want to create a new NSWindow, with no border by using NSBorderlessWindowMask as the style mask. The content view of that window should be another custom view of yours that you implement the menu selection in.