intercept paste action in chat entry box for mu links

gui/src/main/groovy/com/muwire/gui/chat/ChatEntryPane.groovy

@@ -1,8 +1,12 @@
 package com.muwire.gui.chat
 
-
+import com.muwire.gui.CopyPasteSupport
 import com.muwire.gui.UISettings
 import com.muwire.gui.contacts.POPLabel
+import com.muwire.gui.mulinks.CollectionMuLink
+import com.muwire.gui.mulinks.FileMuLink
+import com.muwire.gui.mulinks.InvalidMuLinkException
+import com.muwire.gui.mulinks.MuLink
 import com.muwire.gui.profile.PersonaOrProfile
 import com.muwire.gui.profile.ProfileConstants
 import sun.swing.UIAction
@@ -14,6 +18,7 @@ import javax.swing.event.MenuKeyListener
 import javax.swing.text.*
 import java.awt.*
 import java.awt.event.ActionEvent
+import java.awt.event.InputEvent
 import java.awt.event.KeyAdapter
 import java.awt.event.KeyEvent
 import java.util.List
@@ -90,6 +95,10 @@ class ChatEntryPane extends JTextPane {
         KeyStroke enter = KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0)
         Object enterObject = inputMap.get(enter)
         actionMap.put(enterObject, noAction)
+        
+        Action originalPasteAction = actionMap.get(DefaultEditorKit.pasteAction)
+        Action linkPasteAction = new LinkPasteAction(originalPasteAction)
+        actionMap.put(DefaultEditorKit.pasteAction, linkPasteAction)
     }
 
     private String getTextSinceAt(){
@@ -211,9 +220,17 @@ class ChatEntryPane extends JTextPane {
                 sb.append(c)
                 continue
             }
-            POPLabel label = (POPLabel) component
+            if (component instanceof POPLabel) {
-            sb.append(label.personaOrProfile.getPersona().toBase64())
+                POPLabel label = (POPLabel) component
-            sb.append(AT)
+                sb.append(label.personaOrProfile.getPersona().toBase64())
+                sb.append(AT)
+            }
+            if (component instanceof MuLinkLabel) {
+                MuLinkLabel label = (MuLinkLabel) component
+                sb.append("<")
+                sb.append(label.link.toLink())
+                sb.append(">")
+            }
         }
         sb.toString()
     }
@@ -256,7 +273,7 @@ class ChatEntryPane extends JTextPane {
                         position++
                 }
             } else {
-                while (position > 0) {
+                while (position >= 0) {
                     if (!isInComponent(position))
                         break
                     delegate.actionPerformed(e)
@@ -266,6 +283,41 @@ class ChatEntryPane extends JTextPane {
         }
     }
     
+    private class LinkPasteAction extends UIAction {
+        private final Action delegate
+        LinkPasteAction(Action delegate) {
+            super("Paste")
+            this.delegate = delegate
+        }
+
+        @Override
+        void actionPerformed(ActionEvent e) {
+            if(!CopyPasteSupport.canPasteString())
+                return
+
+
+            String string = CopyPasteSupport.pasteFromClipboard()
+            try {
+                MuLink link = MuLink.parse(string)
+                JLabel label = null
+                if (link.getLinkType() == MuLink.LinkType.FILE) {
+                    label = new FileLinkLabel((FileMuLink) link, settings, true)
+                } else if (link.getLinkType() == MuLink.LinkType.COLLECTION) {
+                    label = new CollectionLinkLabel((CollectionMuLink)link, settings, true)
+                }
+
+                final int position = getCaret().getDot()
+                StyledDocument document = getStyledDocument()
+                Style style = document.addStyle("newStyle", null)
+                StyleConstants.setComponent(style, label)
+                document.insertString(position, " ", style)
+                
+            } catch (InvalidMuLinkException notALink) {
+                delegate.actionPerformed(e)
+            }
+        }
+    }
+    
     private static class NullAction extends UIAction {
         NullAction() {
             super("nothing")

gui/src/main/groovy/com/muwire/gui/chat/CollectionLinkLabel.groovy

@@ -0,0 +1,22 @@
+package com.muwire.gui.chat
+
+import com.muwire.gui.HTMLSanitizer
+import com.muwire.gui.SizeFormatter
+import com.muwire.gui.UISettings
+import com.muwire.gui.mulinks.CollectionMuLink 
+
+class CollectionLinkLabel extends MuLinkLabel {
+    CollectionLinkLabel(CollectionMuLink link, UISettings settings, boolean border) {
+        super(link, settings, border)
+    }
+
+    @Override
+    protected String getVisibleText() {
+        CollectionMuLink link = (CollectionMuLink) this.link
+
+        StringBuffer sb = new StringBuffer()
+        SizeFormatter.format(link.totalSize, sb)
+        
+        return HTMLSanitizer.escape(link.name) + " (" + link.numFiles + " files " + sb.toString()+")"
+    }
+}

gui/src/main/groovy/com/muwire/gui/chat/FileLinkLabel.groovy

@@ -0,0 +1,22 @@
+package com.muwire.gui.chat
+
+import com.muwire.gui.HTMLSanitizer
+import com.muwire.gui.SizeFormatter
+import com.muwire.gui.UISettings
+import com.muwire.gui.mulinks.FileMuLink 
+
+class FileLinkLabel extends MuLinkLabel {
+    
+    FileLinkLabel(FileMuLink link, UISettings settings, boolean border) {
+        super(link, settings, border)
+    }
+    
+    protected String getVisibleText() {
+        FileMuLink link = (FileMuLink) this.link
+        
+        StringBuffer sb = new StringBuffer()
+        SizeFormatter.format(link.fileSize, sb)
+        
+        HTMLSanitizer.escape(link.name) + " (" + sb.toString() + ")"
+    }
+}

gui/src/main/groovy/com/muwire/gui/chat/FileLinkPanel.groovy

@@ -0,0 +1,39 @@
+package com.muwire.gui.chat
+
+import com.muwire.gui.UISettings
+import com.muwire.gui.mulinks.FileMuLink
+
+import javax.swing.Icon
+import javax.swing.ImageIcon
+import javax.swing.JButton
+import javax.swing.JPanel
+import java.awt.BorderLayout
+import java.awt.Image
+import java.util.function.Consumer
+
+class FileLinkPanel extends JPanel {
+    
+    private static final Icon DOWN_ICON
+    static {
+        DOWN_ICON = new ImageIcon(FileLinkPanel.class.getClassLoader().getResource("down_arrow.png"))
+    }
+    
+    private final FileMuLink link
+    private final UISettings settings
+    private final Consumer<FileMuLink> linkConsumer
+    
+    FileLinkPanel(FileMuLink link, UISettings settings, Consumer<FileMuLink> linkConsumer) {
+        super()
+        this.linkConsumer = linkConsumer
+        
+        setLayout(new BorderLayout())
+        
+        def label = new FileLinkLabel(link, settings, false)
+        add(label, BorderLayout.CENTER)
+        
+        JButton button = new JButton()
+        button.setIcon(DOWN_ICON)
+        button.addActionListener({linkConsumer.accept(link)})
+        add(button, BorderLayout.EAST)
+    }
+}

gui/src/main/groovy/com/muwire/gui/chat/MuLinkLabel.groovy

@@ -0,0 +1,46 @@
+package com.muwire.gui.chat
+
+
+import com.muwire.gui.UISettings
+import com.muwire.gui.mulinks.MuLink
+
+import javax.swing.*
+import javax.swing.border.Border
+import java.awt.*
+
+abstract class MuLinkLabel extends JLabel {
+    final MuLink link
+
+    private final UISettings settings
+
+    MuLinkLabel(MuLink link, UISettings settings, boolean border) {
+        super()
+        this.link = link
+        this.settings = settings
+        
+        String visibleText = getVisibleText()
+        setText("<html>$visibleText</html>")
+        
+        int preferredX = 0, preferredY = 24
+
+        FontMetrics fontMetrics = getFontMetrics(getFont())
+        for (int i = 0; i < visibleText.length(); i++) {
+            char c = text.charAt(i)
+            preferredX += fontMetrics.charWidth(c)
+        }
+
+        if (border) {
+            Border b = BorderFactory.createEtchedBorder()
+            setBorder(b)
+            Insets insets = b.getBorderInsets(this)
+            preferredX += insets.left
+            preferredX += insets.right
+        }
+
+        setMaximumSize([preferredX, preferredY] as Dimension)
+        float alignmentY = 0.5f + (settings.fontSize * 1f / preferredY) / 2
+        setAlignmentY(alignmentY)
+    }
+    
+    protected abstract String getVisibleText()
+}