Added image preview on Image edit form; Added Web form editing for File

object content if the content is a text type and under 64K; updated help
files.

lib/python/OFS/Image.py

@@ -84,7 +84,7 @@
 ##############################################################################
 """Image object"""
 
-__version__='$Revision: 1.131 $'[11:-2]
+__version__='$Revision: 1.132 $'[11:-2]
 
 import Globals, string, struct
 from OFS.content_types import guess_content_type
@@ -443,7 +443,8 @@ class File(Persistent, Implicit, PropertyManager,
         self.ZCacheable_invalidate()
         self.http__refreshEtag()
 
-    def manage_edit(self, title, content_type, precondition='', REQUEST=None):
+    def manage_edit(self, title, content_type, precondition='',
+                    filedata=None, REQUEST=None):
         """
         Changes the title and content type attributes of the File or Image.
         """
@@ -454,7 +455,10 @@ class File(Persistent, Implicit, PropertyManager,
         self.content_type=str(content_type)
         if precondition: self.precondition=str(precondition)
         elif self.precondition: del self.precondition
-        self.ZCacheable_invalidate()
+        if filedata is not None:
+            self.update_data(filedata, content_type, len(filedata))
+        else:
+            self.ZCacheable_invalidate()
         if REQUEST:
             message="Saved changes."
             return self.manage_main(self,REQUEST,manage_tabs_message=message)

lib/python/OFS/dtml/fileEdit.dtml

@@ -3,10 +3,11 @@
 
 
 <p class="form-help">
-You can update the data for this <dtml-var kind> using the form below. 
+You can update the data for this file object using the form below. 
 Select a data file from your local computer by clicking the <em>browse</em> 
-button and click <em>upload</em> to update the contents of the <dtml-var 
-kind>.
+button and click <em>upload</em> to update the contents of the
+file. You may also edit the file content directly if the content is a 
+text type and small enough to be edited in a text area.
 </p>
 
 <form action="<dtml-var URL1>" method="post" enctype="multipart/form-data">
@@ -47,6 +48,19 @@ kind>.
   </td>
 </tr>
 
+<dtml-if "this().getContentType()[:4] == 'text' and this().get_size() < 65536">
+<tr>
+  <td align="left" valign="top" colspan="2">
+  <div style="width: 100%;">
+  <textarea name="filedata:text" wrap="off" style="width: 100%;"<dtml-if 
+   dtpref_cols> cols="<dtml-var dtpref_cols>"<dtml-else
+   > cols="50"</dtml-if><dtml-if dtpref_rows> rows="<dtml-var 
+   dtpref_rows>"<dtml-else> rows="20"</dtml-if>><dtml-var 
+   __str__></textarea>
+  </div>
+  </td>
+</tr>
+<dtml-else>
 <tr>
   <td align="left" valign="top">
   <div class="form-label">
@@ -59,7 +73,6 @@ kind>.
   </div>
   </td>
 </tr>
-
 <tr>
   <td align="left" valign="top">
   <div class="form-label">
@@ -72,6 +85,7 @@ kind>.
   </div>
   </td>
 </tr>
+</dtml-if>
 
 <tr>
   <td></td>

lib/python/OFS/dtml/imageEdit.dtml

@@ -36,6 +36,21 @@ kind>.
   </td>
 </tr>
 
+<tr>
+  <td align="left" valign="top">
+  <div class="form-label">
+  Preview
+  </div>
+  </td>
+  <td align="left" valign="top">
+    <dtml-if "height < 250">
+    <dtml-var tag>
+    <dtml-else>
+    <dtml-var "tag(scale=250.0 / height)">
+    </dtml-if>
+  </td>
+</tr>
+
 <tr>
   <td align="left" valign="top">
   <div class="form-label">