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45 lines
1.2 KiB
45 lines
1.2 KiB
6 years ago
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// Copyright © 2015 Abhishek Banthia
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import AppKit
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import Cocoa
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class TextViewWithPlaceholder: NSTextView {
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let placeholder = makePlaceHolder()
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override init(frame frameRect: NSRect) {
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super.init(frame: frameRect)
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}
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required init?(coder: NSCoder) {
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super.init(coder: coder)
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}
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class func makePlaceHolder() -> NSAttributedString {
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if let placeHolderFont = NSFont(name: "Avenir", size: 14) {
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let textDict = [
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NSAttributedString.Key.foregroundColor: NSColor.gray,
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NSAttributedString.Key.font: placeHolderFont,
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]
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return NSAttributedString(string: " Add your notes here.", attributes: textDict)
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}
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return NSAttributedString(string: " Add your notes here")
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}
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override func becomeFirstResponder() -> Bool {
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setNeedsDisplay(frame)
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return super.becomeFirstResponder()
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}
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override func draw(_ dirtyRect: NSRect) {
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super.draw(dirtyRect)
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if string == CLEmptyString && self != window?.firstResponder {
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placeholder.draw(at: NSPoint(x: 0, y: 0))
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}
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}
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override func resignFirstResponder() -> Bool {
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setNeedsDisplay(frame)
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return super.resignFirstResponder()
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}
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}
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