Merge pull request #79 from frantzmiccoli/expandable-textview

Now the view containing the subtitle expands according to its content
vikmeup · Jul 16, 2015 · 4e272ce · 4e272ce
2 parents 007a53a + aa71236
commit 4e272ce
Showing 1 changed file with 31 additions and 7 deletions.
diff --git a/SCLAlertView/SCLAlertView.swift b/SCLAlertView/SCLAlertView.swift
@@ -76,6 +76,8 @@ public class SCLAlertView: UIViewController {
     let kWindowWidth: CGFloat = 240.0
     var kWindowHeight: CGFloat = 178.0
     var kTextHeight: CGFloat = 90.0
+    let kTextFieldHeight: CGFloat = 45.0
+    let kButtonHeight: CGFloat = 45.0
 
     // Font
     let kDefaultFont = "HelveticaNeue"
@@ -170,28 +172,50 @@ public class SCLAlertView: UIViewController {
         }
         // Set background frame
         view.frame.size = sz
+
+        // computing the right size to use for the textView
+        let maxHeight = sz.height - 100 // max overall height
+        var consumedHeight = CGFloat(0)
+        consumedHeight += kTitleTop + kTitleHeight
+        consumedHeight += 14
+        consumedHeight += kButtonHeight * CGFloat(buttons.count)
+        consumedHeight += kTextFieldHeight * CGFloat(inputs.count)
+        let maxViewTextHeight = maxHeight - consumedHeight
+        let viewTextWidth = kWindowWidth - 24
+        let suggestedViewTextSize = viewText.sizeThatFits(CGSizeMake(viewTextWidth, CGFloat.max))
+        let viewTextHeight = min(suggestedViewTextSize.height, maxViewTextHeight)
+
+        // scroll management
+        if (suggestedViewTextSize.height > maxViewTextHeight) {
+            viewText.scrollEnabled = true
+        } else {
+            viewText.scrollEnabled = false
+        }
+
+        let windowHeight = consumedHeight + viewTextHeight
         // Set frames
         var x = (sz.width - kWindowWidth) / 2
-        var y = (sz.height - kWindowHeight -  (kCircleHeight / 8)) / 2
-        contentView.frame = CGRect(x:x, y:y, width:kWindowWidth, height:kWindowHeight)
+        var y = (sz.height - windowHeight - (kCircleHeight / 8)) / 2
+        contentView.frame = CGRect(x:x, y:y, width:kWindowWidth, height:windowHeight)
         y -= kCircleHeightBackground * 0.6
         x = (sz.width - kCircleHeightBackground) / 2
         circleBG.frame = CGRect(x:x, y:y+6, width:kCircleHeightBackground, height:kCircleHeightBackground)
         // Subtitle
         y = kTitleTop + kTitleHeight
         viewText.frame = CGRect(x:12, y:y, width: kWindowWidth - 24, height:kTextHeight)
+        viewText.frame = CGRect(x:12, y:y, width: viewTextWidth, height:viewTextHeight)
         // Text fields
-        y += kTextHeight + 14.0
+        y += viewTextHeight + 14.0
         for txt in inputs {
             txt.frame = CGRect(x:12, y:y, width:kWindowWidth - 24, height:30)
             txt.layer.cornerRadius = 3
-            y += 40
+            y += kTextFieldHeight
         }
         // Buttons
         for btn in buttons {
             btn.frame = CGRect(x:12, y:y, width:kWindowWidth - 24, height:35)
             btn.layer.cornerRadius = 3
-            y += 45.0
+            y += kButtonHeight
         }
     }
 
@@ -203,7 +227,7 @@ public class SCLAlertView: UIViewController {
 
     public func addTextField(title:String?=nil)->UITextField {
         // Update view height
-        kWindowHeight += 40.0
+        kWindowHeight += kTextFieldHeight
         // Add text field
         let txt = UITextField()
         txt.borderStyle = UITextBorderStyle.RoundedRect
@@ -243,7 +267,7 @@ public class SCLAlertView: UIViewController {
 
     private func addButton(title:String)->SCLButton {
         // Update view height
-        kWindowHeight += 45.0
+        kWindowHeight += kButtonHeight
         // Add button
         let btn = SCLButton()
         btn.layer.masksToBounds = true