I have a UITextField that displays only numeric values (0-9, ., -). When a user selects the contents of the text field, a menu with "copy","paste" and "define" appears. Since the textfield only displays numerical values, I don't want the "define" option to appear. How do I disable the dictionary "define" option in a UITextField?
Edit:
I've solved this and posted the solution below
Swift - iOS 8
You can do it by subclassing UITextField and overriding canPerformAction:WithSender method.
class MyTextFieldWithoutDefine: UITextField {
override func canPerformAction(action: Selector, withSender sender: AnyObject?) -> Bool {
if action == "_define:" {
return false
}
return super.canPerformAction(action, withSender: sender)
}
}
List of all actions:
cut:
copy:
select:
selectAll:
paste:
delete:
_promptForReplace:
_transliterateChinese:
_showTextStyleOptions:
_define:
_addShortcut:
_accessibilitySpeak:
_accessibilitySpeakLanguageSelection:
_accessibilityPauseSpeaking:
makeTextWritingDirectionRightToLeft:
makeTextWritingDirectionLeftToRight:
the solution in the question comment area did not work for me (ios8), i got error with:
action == #selector(defineSelection:)
i was able to remove 'define' from edit menu by specifing the options i wanted to include in the menu:
- (BOOL)canPerformAction:(SEL)action withSender:(id)sender {
if (action == #selector(copy:) ||
action == #selector(selectAll:)) {
return true;
}
return false;
}
more complete answer at: How to disable copy paste option from UITextField programmatically
(thank you serge-k)
If you use a NIB, set the "Correction" property of the UITextField to "NO"(Default value is YES).
If you use code, set the "autocorrectionType" as "UITextAutocorrectionTypeNO".
Try this:
UITextField* textField = //...;
textField.autocorrectionType = UITextAutocorrectionTypeNo;
Related
What is the most expedient way to expand NSOutlineView rows on a single click of the entire row? (not the disclosure triangle)
Is there a single setting for this? Or some magical mode setting that changes the behavior similar to source list style?
Simplest way to do both expand and collapse together seems to be target/action with single clicks. I had tried overriding the selection functions in the outlineview delegate, and that worked for expansion but not collapse. Code below for single click expand/collapse:
[self.myOutlineView setTarget:self]; // Needed if not done in IB
[self.myOutlineView setAction:#selector(outlineViewClicked:)];
[self.myOutlineView setSelectionHighlightStyle:NSTableViewSelectionHighlightStyleNone];
- (void) outlineViewClicked:(NSOutlineView*)sender
{
id clickItem = [sender itemAtRow:[self.itemsOutlineView clickedRow]];
if (clickItem)
{
BOOL optionPressed = (([[NSApp currentEvent] modifierFlags] & NSAlternateKeyMask) == NSAlternateKeyMask);
[sender isItemExpanded:clickItem] ?
[sender.animator collapseItem:clickItem collapseChildren:optionPressed] :
[sender.animator expandItem:clickItem expandChildren:optionPressed];
}
}
Expanding that to collapse siblings:
- (void) outlineViewClicked:(NSOutlineView*)sender
{
id clickItem = [sender itemAtRow:[self.itemsOutlineView clickedRow]];
if (!clickItem)
return;
BOOL optionPressed = (([[NSApp currentEvent] modifierFlags] & NSAlternateKeyMask) == NSAlternateKeyMask);
// Collapse the sibling nodes (tree controller type NSTreeNode)
for (NSTreeNode* node in ((NSTreeNode*)clickItem).parentNode.childNodes)
{
if (node != clickItem && [sender isItemExpanded:node])
[sender.animator collapseItem:node];
}
[sender isItemExpanded:clickItem] ?
[sender.animator collapseItem:clickItem collapseChildren:optionPressed] : [sender.animator expandItem:clickItem expandChildren:optionPressed];
}
The optionPressed BOOL and the subsequent use in expandChildren and collapseChildren was suggested by #ben-haller, who noted that "an option-click on the disclosure triangle expands or collapses all of its contained items." (Quoted from About Outline Views) Ben's modification extends that option-click behavior to the "anywhere in the row" methods here.
Swift version:
outlineView.target = self
outlineView.action = #selector(outlineViewClicked(_:))
#objc private func outlineViewClicked(_ sender: NSOutlineView) {
expandOrCollapseRow(outlineView: sender)
}
private func expandOrCollapseRow(outlineView: NSOutlineView) {
if let clickedItem = outlineView.item(atRow: outlineView.clickedRow) {
if outlineView.isItemExpanded(clickedItem) {
outlineView.animator().collapseItem(clickedItem)
} else {
outlineView.animator().expandItem(clickedItem, expandChildren: true)
}
}
}
I have several textfields, each with tags, that I want to individually add to an array. I need to figure out which field it is coming from before I add it. I would like to use the same method for all of them rather than have a method for each textfield.
Is it possible to get the variable name of the textfield from the sender? If they were button I could use [sender currentTitle], but I don't know how to get an identifier from the textfield.
I am thinking of something like this:
- (void)makeItSo:(id)sender
{
NSString * senderName = (UITextField*)[sender stringValue] ;
if ([senderName isEqual: #"name"] )
-- add name to array
else if ([senderName isEqual: #"address"] )
-- add address to array
}
If you give each text field a tag, then use the tag:
- (void)makeItSo:(UITextField *)sender {
if (sender.tag == 1) {
// the name text field
} else if (sender.tag == 2) {
// the address text field
}
}
This assumes you have set the tag property for each text field either in IB or in code.
It could be useful to define constants for each tag so you end up with something that is easier to read:
#define kNameTextField 1
#define kAddressTextField 2
- (void)makeItSo:(UITextField *)sender {
if (sender.tag == kNameTextField) {
// the name text field
} else if (sender.tag == kAddressTextField) {
// the address text field
}
}
If you have outlets or instance variables then you can do:
- (void)makeItSo:(UITextField *)sender {
if (sender == _nameTextField) {
// the name text field
} else if (sender == _addressTextField) {
// the address text field
}
}
where _nameTextField and _addressTextFields are the ivars for the text fields.
Is it possible to get the variable name of the textfield from the sender?
No, unless it's an instance variable, in which case you can, but you better don't.
I don't know how to get an identifier from the textfield
As always, it's enough to read the documentation as use the tag property of UIView:
if ([sender tag] == SOME_CUSTOM_PRESET_VALUE) {
// do stuff
}
For example you may have these text fields as ivars:
#property (weak) UITextField* textField1; // tag=1
#property (weak) UITextField* textField2; // tag=2
...
#property (weak) UITextField* textFieldN; // tag=N
When you receive an action you simply do:
- (void)makeItSo:(id)sender
{
// This is the searched text field
UITextField* textField= [self valueForKey: [NSString stringWithFormat: #"textField%d",sender.tag] ];
}
But at this point why not using a single property which is an array with N text fields, instead of N properties?
I have a method of adding secondary nearby annotations (ann2) when I tap on another annotation (ann1). But when I deselect and re-select the exact same annotation (ann1) the ann2 re-creates it self and is getting added again. Is there a way to check if the annotation already exists on the map and if yes then do nothing otherwise add the new annotation. I have already checked this: Restrict Duplicate Annotation on MapView but it did not help me.. Any advice is appreciated. This is what I have so far:
fixedLocationsPin *pin = [[fixedLocationsPin alloc] init];
pin.title = [NSString stringWithFormat:#"%#",nearestPlace];
pin.subtitle = pinSubtitle;
pin.coordinate = CLLocationCoordinate2DMake(newObject.lat, newObject.lon);
for (fixedLocationsPin *pins in mapView.annotations) {
if (MKMapRectContainsPoint(mapView.visibleMapRect, MKMapPointForCoordinate (pins.coordinate))) {
NSLog(#"already in map");
}else{
[mapView addAnnotation:pin];
}
In this case I get the log already on map but I also get the drop animation of the annotation adding to the map. Any ideas?
Thank you in advance..
Your for loop isn't checking if the annotation is on the screen, it is checking if the coordinates of the pin are currently within the visible area. Even if it was checking if the pin object was already in the mapView.annotations it would never be true, because you've only just created pin a few lines earlier, it can't possibly be the same object as on in the mapView.annotations. It might though have the same coordinates and title, and that's what you need to check:
bool found = false;
for (fixedLocationsPin *existingPin in mapView.annotations)
{
if (([existingPin.title isEqualToString:pin.title] &&
(existingPin.coordinate.latitude == pin.coordinate.latitude)
(existingPin.coordinate.longitude == pin.coordinate.longitude))
{
NSLog(#"already in map");
found = true;
break;
}
}
if (!found)
{
[mapView addAnnotation:pin];
}
Annotations array exist in map object so you just have to check
if ( yourmap.annotations.count==0)
{
NSLog(#"no annotations");
}
NSNumber *latCord = [row valueForKey:#"latitude"];
NSNumber *longCord = [row valueForKey:#"longitude"];
NSString *title = [row valueForKey:#"name"];
CLLocationCoordinate2D coord;
coord.latitude = latCord.doubleValue;
coord.longitude = longCord.doubleValue;
MapAnnotation *annotation = [[MapAnnotation alloc]initWithCoordinate:coord withTitle:title];
if([mkMapView.annotations containsObject:annotation]==YES){
//add codes here if the map contains the annotation.
}else {
//add codes here if the annotation does not exist in the map.
}
if (sampleMapView.annotations.count > 0) {
sampleMapView.removeAnnotation(detailMapView.annotations.last!)
}
Following my comment on Craig's answer, I think the solution could look like something like this :
import MapKit
extension MKMapView {
func containsAnnotation(annotation: MKAnnotation) -> Bool {
if let existingAnnotations = self.annotations as? [MKAnnotation] {
for existingAnnotation in existingAnnotations {
if existingAnnotation.title == annotation.title
&& existingAnnotation.coordinate.latitude == annotation.coordinate.latitude
&& existingAnnotation.coordinate.longitude == annotation.coordinate.longitude {
return true
}
}
}
return false
}
}
This code allows you to check if a mapView contains a given annotation. Use this in a "for" loop on all your annotations:
for annotation in annotations {
if mapView.containsAnnotation(annotation) {
// do nothing
} else {
mapView.addAnnotation(annotation)
}
PS: this works well if you need to add new annotations to a mapView. But if you need also to remove entries, you may have to do the opposite: check that each existing annotation exists in the new array of annotations ; if not, remove it.
Or you could remove everything and add everything again (but then you will have the change animated ...)
I've been around this for a while.. I thought this should be an easy task, but it isn't =D
What I am trying to do, is to display the combobox's list when the user clicks the combobox but not specifically in the button.
Any Idea?
Thanks in advance!
This answer fits the title of the question, but not question itself. Omer wanted to touch a text field and have the box popup.
This solution shows the popup when the user enters text.
I found this answer on cocoabuilder from Jens Alfke. I reposted his code here. Thanks Jens.
original cocoabuilder post: (http://www.cocoabuilder.com/archive/cocoa)
#interface NSComboBox (MYExpansionAPI)
#property (getter=isExpanded) BOOL expanded;
#end
#implementation NSComboBox (MYExpansionAPI)
- (BOOL) isExpanded
{
id ax = NSAccessibilityUnignoredDescendant(self);
return [[ax accessibilityAttributeValue:
NSAccessibilityExpandedAttribute] boolValue];
}
- (void) setExpanded: (BOOL)expanded
{
id ax = NSAccessibilityUnignoredDescendant(self);
[ax accessibilitySetValue: [NSNumber numberWithBool: expanded]
forAttribute: NSAccessibilityExpandedAttribute];
}
I used this code in my controlTextDidChange: method.
- (void) controlTextDidChange:(NSNotification *) aNotification {
NSTextField *textField = [aNotification object];
NSString *value = [textField stringValue];
NSComboBox *box = [self comboBox];
if (value == nil || [value length] == 0) {
if ([box isExpanded]) { [box setExpanded:NO]; }
} else {
if (![box isExpanded]) { [box setExpanded:YES]; }
}
}
Returns true if the NSComboBox's list is expanded
comboBox.cell?.isAccessibilityExpanded() ?? false
Open the NSComboBox's list
comboBox.cell?.setAccessibilityExpanded(true)
Close the NSComboBox's list
comboBox.cell?.setAccessibilityExpanded(false)
Ref. jmoody’s answer.
You can use the following code line:
[(NSComboBoxCell*)self.acomboBox.cell performSelector:#selector(popUp:)];
Put
comboBoxCell.performSelector(Selector("popUp:"))
Into
override func controlTextDidChange(obj: NSNotification) {}
is what I ended up with. Thanks #Ahmed Lotfy
Here's the full code, it works for me on OSX 10.11
override func controlTextDidChange(obj: NSNotification) {
if let comboBoxCell = self.comboBox.cell as? NSComboBoxCell {
comboBoxCell.performSelector(Selector("popUp:"))
}
}
Thanks to jmoody and Jens Alfke mentioned above. Here is a SWIFT translation of the above solution.
import Cocoa
class CComboBoxEx: NSComboBox {
override func drawRect(dirtyRect: NSRect) {
super.drawRect(dirtyRect)
// Drawing code here.
}
func isExpanded() -> Bool{
if let ax:AnyObject? = NSAccessibilityUnignoredDescendant(self) {
if ax!.accessibilityAttributeValue(NSAccessibilityExpandedAttribute) != nil {
return true
}
}
return false
}
func setExpanded (bExpanded:Bool) {
if let ax:AnyObject? = NSAccessibilityUnignoredDescendant(self) {
ax!.accessibilitySetValue(NSNumber(bool: bExpanded), forAttribute: NSAccessibilityExpandedAttribute)
}
}
}
NSComboBox was not designed to work this way. Because the user may want to edit the text in the control, they'll need to be able to click it without unexpectedly popping up the choices.
You would need to subclass NSComboBoxCell and change this behavior ... but then you'd have a standard-looking control that does not behave in a standard way. If you're determined to do this, take a look at the open source version of NSComboBoxCell. The interesting methods appear to be -popUpForComboBoxCell: and friends.
Based on the other answers I wrote this solution (tested with Xcode 10.2.1, Swift 5). It uses the same ideas but it's a little shorter.
// Put this extension for NSComboBox somewhere in your project
import Cocoa
public extension NSComboBox {
var isExpanded: Bool{
set {
cell?.setAccessibilityExpanded(newValue)
}
get {
return cell?.isAccessibilityExpanded() ?? false
}
}
}
// Set your corresponding NSViewController as NSComboBoxDelegate
// in the storyboard and add this piece of code
// to expand the combobox when the user types
class MyViewController: NSViewController, NSComboBoxDelegate {
func controlTextDidChange(_ notification: Notification) {
guard let comboBox = notification.object as? NSComboBox else { return }
if comboBox.isExpanded == false {
comboBox.isExpanded = true
}
}
}
Any way to have a NSButton title to wrap when it's width is longer than the button width, instead of getting clipped?
I'm trying to have a radio button with a text that can be long and have multiple lines. One way I thought about having it work is to have an NSButton of type NSRadioButton but can't get multiple lines of text to work.
Maybe my best alternative is to have an NSButton followed by an NSTextView with the mouseDown delegate function on it triggering the NSButton state?
I don't believe you can. You'd have to subclass NSButtonCell to add support for this.
That said, it's typically a bad idea to have multiple lines of text on a button. A button label should concisely represent the action performed:
The label on a push button should be a verb or verb phrase that describes the action it performs—Save, Close, Print, Delete, Change Password, and so on. If a push button acts on a single setting, label the button as specifically as possible; “Choose Picture…,” for example, is more helpful than “Choose…” Because buttons initiate an immediate action, it shouldn’t be necessary to use “now” (Scan Now, for example) in the label.
What are you trying to do?
I`m incredibly late, but I still feel obliged to share what I`ve found.
Just add a newline character before and after the button title before you assign it to the actual button — and voilà! It now wraps automatically.
The downside of this approach is that, for reasons unknown to me, apps compiled on a certain version of OS X shift button titles one line down when run on newer versions.
Well here's my excuse for needing multiline buttons: I'm writing an emulator for an IBM 701, complete with front panel, and, bless their hearts, the designers of that front panel used multi-line labels. Here's my code. You only have to subclass NSButtonCell (not NSButton), and only one method needs to be overridden.
// In Xcode 4.6 (don't know about earlier versions): Place NSButton, then double-click it
// and change class NSButtonCell to ButtonMultiLineCell.
#interface ButtonMultiLineCell : NSButtonCell
#end
#implementation ButtonMultiLineCell
- (NSRect)drawTitle:(NSAttributedString *)title withFrame:(NSRect)frame inView:(NSView *)controlView
{
NSAttributedString *as = [[NSAttributedString alloc] initWithString:[title.string stringByReplacingOccurrencesOfString:#" " withString:#"\n"]];
NSFont *sysFont = [NSFont systemFontOfSize:10];
NSMutableParagraphStyle *paragraphStyle = [[[NSParagraphStyle defaultParagraphStyle] mutableCopy] autorelease];
[paragraphStyle setAlignment:NSCenterTextAlignment];
NSDictionary *attributes = [NSDictionary dictionaryWithObjectsAndKeys:
sysFont, NSFontAttributeName,
paragraphStyle, NSParagraphStyleAttributeName,
nil];
NSSize textSize = [as.string sizeWithAttributes:attributes];
NSRect textBounds = NSMakeRect(0, 0, textSize.width, textSize.height);
// using frame argument seems to produce text in wrong place
NSRect f = NSMakeRect(0, (controlView.frame.size.height - textSize.height) / 2, controlView.frame.size.width, textSize.height);
[as.string drawInRect:f withAttributes:attributes];
return textBounds; // not sure what rectangle to return or what is done with it
}
#end
Even later, but I also feel obliged to share. You can set the attributedTitle property of NSButton to achieve manual wrapping.
In my case, I wanted the button title to wrap if it was greater than 6 characters (Swift 3):
if button.title.characters.count > 6 {
var wrappedTitle = button.title
wrappedTitle.insert("\n", at: wrappedTitle.index(wrappedTitle.startIndex, offsetBy: 6))
let style = NSMutableParagraphStyle()
style.alignment = .center
let attributes = [NSFontAttributeName: NSFont.systemFont(ofSize: 19), NSParagraphStyleAttributeName: style] as [String : Any]
button.attributedTitle = NSAttributedString(string: wrappedTitle, attributes: attributes)
}
I'm with Sören; If you need a longer description, think about using a tool tip or placing descriptive text in a wrapped text field using the small system font below the radio choices if the descriptive text is only a few lines. Otherwise, you could provide more information in a help document.
Figuring out a way to say what you need to say in a concise way is your best bet, though.
As of today, I'm seeing this can be done simply with a property on the cell of NSButton:
myButton.cell?.wraps = true
I had the same problem and tried, with a sinking heart, the solutions in this post. (While I appreciate advice that one generally should keep button titles short, I'm writing a game, and I want multi-line answers to behave like buttons).
Sometimes, you don't get there from here. My ideal was an NSButton with a multi-line label, but since I can't get that without considerable hassle, I have created a PseudoButton: an NSControl subclass that behaves like a button. It has a hand cursor to indicate 'you can click here' and it gives feedback: when you click the mouse, it changes to selectedControlColor, when you release the mouse, it returns to normal. And unlike solutions that try to stack buttons and labels, there is no problem with having labels and images on top of the view: the whole of the view is the clickable area.
import Cocoa
#IBDesignable
class PseudoButton: NSControl {
#IBInspectable var backgroundColor: NSColor = NSColor.white{
didSet{
self.needsDisplay = true
}
}
override func draw(_ dirtyRect: NSRect) {
super.draw(dirtyRect)
let path = NSBezierPath(rect: dirtyRect)
backgroundColor.setFill()
path.fill()
NSColor.black.setStroke()
path.lineWidth = 2
path.stroke()
}
override func mouseDown(with event: NSEvent) {
self.backgroundColor = NSColor.selectedControlColor
}
override func mouseUp(with event: NSEvent) {
self.backgroundColor = NSColor.clear
guard let action = action else {return}
tryToPerform(action, with: self)
//#IBAction func pseudobuttonClicked(_ sender: PseudoButton) in the ViewController class
}
override func resetCursorRects() {
addCursorRect(bounds, cursor: .pointingHand)
}
}
You use this like any other control in the storyboard: drag a Pseudobutton in, decorate it at will, and connect it to an appropriate IBAction in your viewController class.
I like this better than meddling with NSCell. (On past experience, NSCell-based hacks are more likely to break).
A little bit late here, here's my code to insert new line in title:
private func calculateMultipleLineTitle(_ title: String) -> String {
guard !title.isEmpty else { return title }
guard let cell = cell as? NSButtonCell else { return title }
let titleRect = cell.titleRect(forBounds: bounds)
let attr = attributedTitle.attributes(at: 0, effectiveRange: nil)
let indent = (attr[.paragraphStyle] as? NSMutableParagraphStyle)?.firstLineHeadIndent ?? 0
let titleTokenArray = title.components(separatedBy: " ") // word wrap break mode
guard !titleTokenArray.isEmpty else { return title }
var multipleLineTitle = titleTokenArray[0]
var multipleLineAttrTitle = NSMutableAttributedString(string: multipleLineTitle, attributes: attr)
var index = 1
while index < titleTokenArray.count {
multipleLineAttrTitle = NSMutableAttributedString(
string: multipleLineTitle + " " + titleTokenArray[index],
attributes: attr
)
if titleRect.minX+indent+multipleLineAttrTitle.size().width > bounds.width {
multipleLineTitle += " \n" + titleTokenArray[index]
} else {
multipleLineTitle += " " + titleTokenArray[index]
}
index += 1
}
return multipleLineTitle
}
Just pass the original title as parameter, it will return multiple line title.
I added an "\n" at the end of the title and I am setting the title using the NSAttributedString. this fixed the problem for me.
I am on MacOS Big Sur 11.7.2, Xcode 13.12.1
private NSAttributedString GetAttributedString(string text)
{
var paragraph = new NSMutableParagraphStyle();
paragraph.Alignment = NSTextAlignment.Center;
paragraph.LineBreakMode = NSLineBreakMode.ByWordWrapping;
var attrString = new NSAttributedString
(
text + "\n",
font: NSFont.FromFontName("Arial", 50.0f),
foregroundColor: NSColor.White,
backgroundColor: NSColor.FromCalibratedRgba(0, 0, 0, 0.0f),
paragraphStyle: paragraph
);
return attrString;
}
textButton.AttributedTitle = GetAttributedString("some text");