From 004fc87655f0475fc40235bb7560e8c3fce1edf9 Mon Sep 17 00:00:00 2001
From: Martin Edenhofer <me@edenhofer.de>
Date: Sat, 27 Sep 2014 11:06:18 +0200
Subject: [PATCH] Replacement for textarea and expanding.

---
 .../app/lib/base/jquery.contenteditable.js    | 204 ++++++++++++++++++
 1 file changed, 204 insertions(+)
 create mode 100644 app/assets/javascripts/app/lib/base/jquery.contenteditable.js

diff --git a/app/assets/javascripts/app/lib/base/jquery.contenteditable.js b/app/assets/javascripts/app/lib/base/jquery.contenteditable.js
new file mode 100644
index 000000000..6820c9deb
--- /dev/null
+++ b/app/assets/javascripts/app/lib/base/jquery.contenteditable.js
@@ -0,0 +1,204 @@
+(function ($) {
+
+/*
+# mode: textonly/richtext / disable b/i/u/enter + strip on paste
+# pasteOnlyText: true
+# maxlength: 123
+# multiline: true / disable enter + strip on paste
+# placeholder: 'some placeholder'
+#
+*/
+
+  var DEFAULTS = {
+    mode:     'richtext',
+    multiline: true
+  }
+  var OPTIONS = {}
+
+  // add/remove placeholder
+  var updatePlaceholder = function(target, type) {
+    var text = target.text().trim()
+    var placeholder = '<span class="placeholder">' + OPTIONS.placeholder + '</span>'
+
+    // add placholder if no text exists
+    if ( type === 'add') {
+      if ( !text ) {
+        target.html( placeholder )
+      }
+    }
+
+    // empty placeholder text
+    else {
+      if ( text === OPTIONS.placeholder ) {
+        setTimeout(function(){
+          document.execCommand('selectAll', false, '');
+          document.execCommand('delete', false, '');
+          document.execCommand('selectAll', false, '');
+          document.execCommand('removeFormat', false, '');
+        }, 100);
+      }
+    }
+  }
+
+  // get correct val if textbox
+  $.fn.ceg = function(option) {
+    var options = $.extend({}, DEFAULTS, option)
+    updatePlaceholder( this, 'remove' )
+
+    // get text
+    if ( options.mode === 'textonly' ) {
+
+      // strip html signes if multi line exists
+      if ( options.multiline ) {
+        text = this.html()
+        text = text.replace(/<br>/g, "\n") // new line as br
+        text = text.replace(/<div>/g, "\n") // in some caes, new line als div
+        text = $("<div>" + text + "</div>").text().trim()
+        return text
+      }
+      return this.text().trim()
+    }
+    return this.html().trim()
+  }
+
+  $.fn.ce = function(option) {
+    var options = $.extend({}, DEFAULTS, option)
+    options.placeholder = options.placeholder || this.data('placeholder')
+    OPTIONS = options
+
+    // process placeholder
+    if ( options.placeholder ) {
+      updatePlaceholder( this, 'add' )
+      this.bind('focus', function (e) {
+        updatePlaceholder( $(e.target), 'remove' )
+      })
+      this.bind('blur', function (e) {
+        updatePlaceholder( $(e.target), 'add' )
+      })
+    }
+
+    // maxlength check
+    if ( options.maxlength ) {
+      this.bind('keydown', function (e) {
+
+        // check maxlength
+        length = $(e.target).text().length
+        if ( length >= options.maxlength ) {
+          switch ( e.keyCode ) {
+            case 8: // backspace
+              // just go ahead
+              break;
+            case 37: // up
+              // just go ahead
+              break;
+            case 38: // right
+              // just go ahead
+              break;
+            case 39: // down
+              // just go ahead
+              break;
+            case 40: // left
+              // just go ahead
+              break;
+            case 65: // a + ctrl - select all
+              // just go ahead
+              if ( e.ctrlKey || e.metaKey ) {
+                break;
+              }
+            case 65: // x + ctrl - cut
+              // just go ahead
+              if ( e.ctrlKey || e.metaKey ) {
+                break;
+              }
+            default:
+              $(e.target).addClass('invalid')
+              e.preventDefault()
+          }
+        }
+        else {
+          if ( $(e.target).hasClass('invalid') ) {
+            $(e.target).removeClass('invalid')
+          }
+        }
+      })
+    }
+
+    // just paste text
+    if ( options.mode === 'textonly' ) {
+      this.bind('paste', function (e) {
+        var text = (e.originalEvent || e).clipboardData.getData('text/plain');
+        if (text) {
+
+          // replace new lines
+          if ( !options.multiline ) {
+            text = text.replace(/\n/g, '')
+            text = text.replace(/\r/g, '')
+            text = text.replace(/\t/g, '')
+          }
+
+          // limit length
+          if ( options.maxlength ) {
+            var pasteLength   = text.length
+            var currentLength = $(e.target).text().length
+            var overSize      = ( currentLength + pasteLength ) - options.maxlength
+            if ( overSize > 0 ) {
+              text = text.substr( 0, pasteLength - overSize )
+            }
+          }
+
+          // insert new text
+          e.preventDefault()
+          document.execCommand('inserttext', false, text);
+        }
+
+      });
+    }
+
+    // disable rich text b/u/i
+    if ( options.mode === 'textonly' ) {
+      this.bind('keydown', function (e) {
+        if ( e.ctrlKey || e.metaKey ) {
+          switch ( e.keyCode ) {
+            case 66: // b
+              e.preventDefault()
+              break;
+            case 73: // i
+              e.preventDefault()
+              break;
+            case 85: // u
+              e.preventDefault()
+              break;
+          }
+        }
+      });
+    }
+
+    // disable multi line
+    if ( !options.multiline ) {
+      this.bind('keydown', function (e) {
+        switch ( e.keyCode ) {
+          case 13: // enter
+            e.preventDefault()
+            break;
+        }
+      })
+    }
+
+  }
+
+}(jQuery));
+
+/* TODO: paste
+    @$('.ticket-title-update').bind(
+      'drop'
+      (e) =>
+        e.preventDefault()
+
+        t2 = e.originalEvent.dataTransfer.getData("text/plain")# : window.event.dataTransfer.getData("Text");
+
+        @log('drop', t2, e.keyCode, e.clipboardData, e, $(e.target).text().length)
+
+        document.execCommand('inserttext', false, '123123');
+        #document.execCommand('inserttext', false, prompt('Paste something.'));
+    )
+*/