From a75529627338eb3207ed0cf3df27fed049df1321 Mon Sep 17 00:00:00 2001
From: Richard Guay <raguay@customct.com>
Date: Wed, 19 Sep 2018 12:09:23 +0700
Subject: [PATCH] Changes for compatability and for accessing Codemirror
 function from any Mint program.

---
 source/CodeMirror.mint      | 27 ++++++++++----
 source/CodeMirrorStore.mint | 73 +++++++++++++++++++++++++++++++++++++
 2 files changed, 92 insertions(+), 8 deletions(-)
 create mode 100644 source/CodeMirrorStore.mint

diff --git a/source/CodeMirror.mint b/source/CodeMirror.mint
index d1fa29c..2d03ef3 100644
--- a/source/CodeMirror.mint
+++ b/source/CodeMirror.mint
@@ -1,22 +1,22 @@
 /* A component that integrates the CodeMirror editor. */
 component CodeMirror {
+  connect CodeMirror.Store exposing { addEditor }
+
   /* The JavaScript files of Codemirror to load, either locally or from a CDN. */
   property javascripts : Array(String) = [
-    "https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.39.0" \
-    "/codemirror.min.js"
+    "https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.39.0/codemirror.min.js"
   ]
 
   /* The CSS files of Codemirror to load, either locally or from a CDN. */
   property styles : Array(String) = [
-    "https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.39.0" \
-    "/codemirror.min.css"
+    "https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.39.0/codemirror.min.css"
   ]
 
   /* Handler for the change event. */
-  property onChange : Function(String, a) = ((value : String) : Void => { void })
+  property onChange : Function(String, Promise(Never, Void)) = ((value : String) : Promise(Never, Void) => { sequence { Promise.never() }})
 
   /* The content to display until the editor is loaded. */
-  property loadingContent : Html = <></>
+  property loadingContent : Html = Html.empty()
 
   /* Whether or not show line numbers. */
   property lineNumbers : Bool = true
@@ -30,12 +30,18 @@ component CodeMirror {
   /* The mode of the editor. */
   property mode : String = ""
 
+  /* Set wordwrap or not. */
+  property wordwrap : Bool = true
+
+  property name : String = ""
+
   /* Loads all assets when the components mounts. */
   fun componentDidMount : Promise(Never, Void) {
     sequence {
       AssetLoader.loadAll(AssetLoader.loadScript, javascripts)
       AssetLoader.loadAll(AssetLoader.loadStyle, styles)
       initializeEditor()
+      addEditor(name,getEditor())
     }
   }
 
@@ -50,7 +56,7 @@ component CodeMirror {
   }
 
   /* Initializes the editor for the given dom element. */
-  fun initializeEditor : Void {
+  fun initializeEditor () : Void {
     `
     (() => {
       if (!this.element) { return }
@@ -60,6 +66,7 @@ component CodeMirror {
         lineNumbers: this.lineNumbers,
         theme: this.theme,
         mode: this.mode,
+        lineWrapping: this.wordwrap
       })
 
       this.editor.on('change', (value) => {
@@ -71,6 +78,10 @@ component CodeMirror {
     `
   }
 
+  fun getEditor() : Unit {
+    `this.editor`
+  }
+
   /* After an update, update the underlying editor instance. */
   fun componentDidUpdate : Void {
     `
@@ -107,7 +118,7 @@ component CodeMirror {
     [
       <textarea::editor ref={saveReference}/>,
       if (`this.editor`) {
-        <></>
+        Html.empty()
       } else {
         loadingContent
       }
diff --git a/source/CodeMirrorStore.mint b/source/CodeMirrorStore.mint
new file mode 100644
index 0000000..ae6729c
--- /dev/null
+++ b/source/CodeMirrorStore.mint
@@ -0,0 +1,73 @@
+store CodeMirror.Store {
+   state editors : Array(EditorRecord) = []
+
+   fun addEditor(nameNew : String, editorNew : Unit) : Promise(Never, Void) {
+      next {
+         editors = Array.push({ name = nameNew, editor = editorNew }, editors)
+      }
+   }
+
+   fun getEditor(name : String) : EditorRecord {
+      Array.firstWithDefault({name = "", editor=`{}`},Array.select((thing : EditorRecord) : Bool => {
+         if(thing.name == name) {
+            true
+         } else {
+            false
+         }
+      }, editors))
+   }
+
+   fun listSelections(editor : EditorRecord) : Array(EditorSelections) {
+      `editor.editor.listSelections()`
+   }
+
+   fun setSelections(editor : EditorRecord, selections : Array(EditorSelections)) : Void {
+      `editor.editor.setSelections(selections)`
+   }
+
+   fun setValue(editor : EditorRecord, text : String) : Void {
+      `editor.editor.setValue(text)`
+   }
+
+   fun getSelection(editor : EditorRecord) : String {
+      `editor.editor.getDoc().getSelection()`
+   }
+
+   fun saveSelection(editor: EditorRecord, text : String) : Void {
+      `editor.editor.getDoc().replaceSelection(text)`
+   }
+
+   fun insertAtCursor(editor : EditorRecord, text : String) : Void {
+      `(()=>{
+         var cursor = editor.editor.getDoc().getCursor();
+         editor.editor.getDoc().replaceRange(text,cursor);
+      })()`
+   }
+
+   fun getCursor(editor : EditorRecord) : Cursor {
+      `editor.editor.getDoc().getCursor()`
+   }
+
+   fun setCursor(editor : EditorRecord, cursor : Cursor) : Void {
+      `editor.editor.getDoc().setCursor(cursor)`
+   }
+
+   fun isSelection(editor : EditorRecord) : Bool {
+      `editor.editor.getDoc().somethingSelected()`
+   }
+}
+
+record EditorRecord {
+   name : String,
+   editor : Unit
+}
+
+record Cursor {
+   line : Number,
+   ch : Number
+}
+
+record EditorSelections {
+   anchor : Cursor,
+   head : Cursor
+}
\ No newline at end of file