NSSearchField的事件监听
https://blog.csdn.net/sinat_31177681/article/details/79714625
2018年03月27日 16:06:45 哈尔滨的酸柠檬
创建一个NSSearchField的子类，继承NSSearchField，在.m文件中重写三个方法，可以监听NSSearchField的首次点击、搜索文本框变化、搜索框点击了clear button事件的监听。如下，
#import "QXSearchField.h"
@implementation QXSearchField
/**
* 用户点击了搜索框
*/
- (void)mouseDown:(NSEvent *)event
{
[super mouseDown:event];
[_qx_SearchFieldDelegate qx_SearchFieldMouseDown:event];
}
/**
* 搜索框文本变化
*/
- (void)textDidChange:(NSNotification *)notification
{
[super textDidChange:notification];
[_qx_SearchFieldDelegate qx_textDidChange:notification];
}
/**
* 搜索框点击clear button
*/
- (void)textDidEndEditing:(NSNotification *)notification
{
[super textDidEndEditing:notification];
[_qx_SearchFieldDelegate qx_textDidEndEditing:notification];
}
@end
原文：https://blog.csdn.net/sinat_31177681/article/details/79714625
在iOS中使用搜索功能可能会用到NSSearchController,但是在mac OS中没有这样控制器，只能只用NSSearchField。
下面直接上代码解释怎么使用
首先拖在控件库中拖一个NSSearchField空间放到xib中。
@property (weak) IBOutlet NSSearchField *mySearchField;
这里有一个问题就是NSSearchField中最左面有一个搜索按钮，当你输入文字的时候NSSearchField中会自动生成一个清除按钮。有时候这两个按钮点击不是很灵活，这个时候需要获取到这两个按钮。分别处理。
NSActionCell *searchCell = [[self.mySearchField cell] searchButtonCell];
NSActionCell *cancelCell = [[self.mySearchField cell] cancelButtonCell];
searchCell.target = self;
searchCell.action = @selector(searchButtonClicked:);
cancelCell.target = self;
cancelCell.action = @selector(cancellButtonClicked:);
#pragma mark -- 点击搜索按钮
- (void)searchButtonClicked:(id)sender {
NSLog(@"search\n");
NSSearchField *search = sender;
NSLog(@"%@", search.stringValue);
}
#pragma mark -- 点击取消按钮
- (void)cancellButtonClicked:(id)sender {
NSLog(@"cancell");
self.mySearchField.stringValue = @"";
}
---------------------
原文：https://blog.csdn.net/tongwei117/article/details/78258456
fileprivate let searchField: NSSearchField = {
let searchField = NSSearchField(frame: NSMakeRect(70, 30, 200, 30))
return searchField
}();
func registerSEarchButtonAction(){
let searchButtonCell = self.searchField.cell as! NSSearchFieldCell
let searchButtonActionCell = searchButtonCell.searchButtonCell!
searchButtonActionCell.target = self
searchButtonActionCell.action = #selector(searchButtonAction(_:))
let cancelButtonCell = self.searchField.cell as! NSSearchFieldCell
let cancelButtonActionCell = cancelButtonCell.cancelButtonCell!
cancelButtonActionCell.target = self
cancelButtonActionCell.action = #selector(cancelButtonAction(_:))
}
@objc func searchButtonAction(_ sender:NSSearchField){
}
@objc func cancelButtonAction(_ sender:NSSearchField){
sender.stringValue = ""
}
