WIP: xanadoc editing.

sourcing/static/js/xanaedit.js

@@ -0,0 +1,112 @@
+'use strict';
+
+function common_start(a, b) {
+    for(var i = 0; i < a.length; i++)
+        if(a[i] != b[i])
+            return i;
+    return a.length
+}
+
+function common_end(a, b) {
+    var min_len = Math.min(a.length, b.length);
+
+    for(var i = 1; i < min_len + 1; i++)
+        if(a[a.length - i] != b[b.length - i])
+            return i - 1;
+    return min_len;
+}
+
+var editor = document.getElementById("editor");
+var changes = document.getElementById("changes");
+
+var edits = [];
+
+editor.value = text;;
+
+function update_list_of_edits() {
+    changes.innerHTML = null;
+    edits.forEach(function(edit) {
+      var update;
+      var start = edit.start + 1;
+      if (edit.op == 'insert') {
+        update = start + ' insert: [' + edit.new + ']';
+      } else if (edit.op == 'delete') {
+        update = start + ' delete: [' + edit.old + ']';
+      } else if (edit.op == 'replace') {
+        update = start + ' replace: [' + edit.old + '] with [' + edit.new + ']';
+      }
+      var div = document.createElement("div");
+      div.innerHTML = update;
+      changes.append(div);
+    });
+}
+
+function update_buttons () {
+  if(edits.length) {
+    $('.save-btn').prop('disabled', false);
+    $('#cancel-btn').text('cancel edits');
+  } else {
+    $('.save-btn').prop('disabled', true);
+    $('#cancel-btn').text('back to view page');
+  }
+}
+
+function update(e) {
+    var current = editor.value;
+    if (current == text)  // no change
+      return
+
+    var start = common_start(text, current);
+    var end = common_end(text.substring(start), current.substring(start));
+
+    var old_text = text.slice(start, text.length - end);
+    var new_text = current.slice(start, current.length - end);
+    text = current;
+
+    // var div = document.createElement("div");
+    var prev_edit = edits[edits.length - 1];
+    if (old_text && !new_text) {  // delete
+      if (prev_edit && prev_edit.op == 'delete' && prev_edit.start == start + 1) {
+        prev_edit.start = start;
+        prev_edit.old = old_text + prev_edit.old;
+      } else if (prev_edit && prev_edit.op == 'delete' && prev_edit.start == start) {
+        prev_edit.old += old_text;
+      } else if (prev_edit && prev_edit.op == 'insert' &&
+                 start - prev_edit.new.length + old_text.length == prev_edit.start &&
+                 prev_edit.new.endsWith(old_text)) {
+          if (prev_edit.new == old_text) {
+              edits.splice(-1, 1);
+          } else {
+              prev_edit.new = prev_edit.new.slice(0, prev_edit.new.length - old_text.length);
+          }
+      } else {
+        edits.push({'op': 'delete', 'start': start, 'old': old_text});
+      }
+      // div.innerHTML = start + ' delete: [' + old_text + ']';
+    } else if (!old_text && new_text) { // insert
+      if (prev_edit && prev_edit.op == 'insert' && prev_edit.start == start - prev_edit.new.length) {
+          prev_edit.new += new_text;
+      } else {
+          edits.push({'op': 'insert', 'start': start, 'new': new_text});
+      }
+      // div.innerHTML = start + ' insert: [' + new_text + ']';
+    } else { // replace
+      edits.push({'op': 'replace', 'start': start, 'new': new_text, 'old': old_text});
+      // div.innerHTML = start + ' replace [' + old_text + '] with [' + new_text + ']';
+    }
+    // changes.append(div);
+
+
+    $('input#edits').val(JSON.stringify(edits));
+
+    update_list_of_edits();
+    update_buttons();
+}
+
+update_buttons();
+editor.addEventListener("input", update, false);
+
+$('#save-btn').click(function(e) {
+  e.preventDefault();
+  console.log('save');
+});

sourcing/templates/view.html

@@ -113,7 +113,7 @@
 
   <p class="my-3">
     <a class="btn btn-primary" href="{{ doc.edit_url }}" role="button">Edit EDL</a>
-    <a class="btn btn-primary" href="#" role="button">Xanaedit text</a>
+    <a class="btn btn-primary" href="{{ doc.xanaedit_url }}" role="button">Xanaedit text</a>
     <a class="btn btn-primary" href="#" role="button">Reorder paragraphs</a>
   </p>
 

sourcing/templates/xanaedit.html

@@ -0,0 +1,39 @@
+{% extends "base.html" %}
+{% from "form/controls.html" import render_field %}
+
+{% block title %}xanaedit {{ doc.title() }}{% endblock %}
+
+{% block content %}
+
+<h1 class="mt-3">{{ doc.title() }}</h1>
+
+<p><a href="{{ doc.url }}">view xanadoc (cancel edit)</a></p>
+
+<form method="POST" action="{{ doc.view_url('finish_xanaedit') }}">
+<input type="hidden" name="edits" id="edits" value=""/>
+
+<div class="row">
+  <div class="col-8">
+
+    <p>
+    <button class="btn btn-primary save-btn" id="save-btn" disabled>save, continue editing</button>
+    <button type="submit" class="btn btn-primary save-btn" id="finish-btn" disabled>save and finish</button>
+    <a href="{{ doc.url }}" class="btn btn-secondary" id="cancel-btn">back to view page</a>
+    </p>
+
+    <textarea id="editor" rows="16" class="w-100" autofocus></textarea>
+  </div>
+  <div class="col-4" id="changes">
+  </div>
+</div>
+
+</form>
+
+{% endblock %}
+
+{% block scripts %}
+<script>
+var text = {{ doc_text.replace('\r\n', '\n')|tojson }};
+</script>
+<script src="{{ url_for('static', filename='js/xanaedit.js') }}"></script>
+{% endblock %}

sourcing/view.py

@@ -8,7 +8,9 @@ from .forms import (LoginForm, SignupForm, AccountSettingsForm,
 from .model import User, SourceDoc, Item, XanaDoc, XanaLink
 from .url import get_url
 from .mail import send_mail
-from .edl import fulfil_edl_with_sources, fulfil_edl
+from .edl import fulfil_edl_with_sources, fulfil_edl, parse_edl
+from .span import Span
+from .edit import apply_edits
 from .database import session
 from .text import iter_lines, add_highlight
 from werkzeug.debug.tbtools import get_current_traceback
@@ -17,7 +19,9 @@ from functools import wraps
 from .utils import nbsp_at_start
 from itsdangerous import URLSafeTimedSerializer
 from sqlalchemy_continuum import version_class
+from pprint import pformat
 
+import json
 import re
 
 login_manager = LoginManager()
@@ -218,7 +222,6 @@ def realize_edl(username, hashid):
     item = get_xanadoc(username, hashid)
 
     spans = list(fulfil_edl(item.text))
-
     doc_text = ''.join(span['text'] for span in spans)
 
     return render_template('realize.html',
@@ -298,8 +301,36 @@ def history(username, hashid):
 
 @bp.route('/<username>/<hashid>/xanaedit')
 def xanaedit_item(username, hashid):
-    obj = get_item(username, hashid)
-    return render_template('xanaedit.html', doc=obj)
+    doc = get_xanadoc(username, hashid)
+
+    spans = list(fulfil_edl(doc.text))
+    doc_text = ''.join(span['text'] for span in spans)
+
+    return render_template('xanaedit.html', doc=doc, doc_text=doc_text)
+
+@bp.route('/<username>/<hashid>/xanaedit', methods=['POST'])
+def save_xanaedit(username, hashid):
+    # doc = get_xanadoc(username, hashid)
+    edits = json.loads(request.form['edits'])
+    return jsonify(edits=edits)
+
+@bp.route('/<username>/<hashid>/finish', methods=['POST'])
+def finish_xanaedit(username, hashid):
+    doc = get_xanadoc(username, hashid)
+    current_edl = parse_edl(doc.text)
+
+    spans = [Span(*span) for span in current_edl['spans']]
+    edits = json.loads(request.form['edits'])
+    new_text = ''
+    new_text_pos = 0
+    for edit in edits:
+        if edit['op'] != 'insert':
+            continue
+        new_text += edit['new']
+        edit['span'] = Span('placeholder', new_text_pos, len(edit['new']))
+        new_text_pos += len(edit['new'])
+    spans = apply_edits(spans, edits)
+    return Response(pformat(spans), mimetype='text/plain')
 
 @bp.route('/<username>/<hashid>/edit', methods=['GET', 'POST'])
 def edit_item(username, hashid):