From 21ac74f764ee91fb6c260af605e4b6490477b4d2 Mon Sep 17 00:00:00 2001
From: Helmut Merz <helmutm@cy55.de>
Date: Sun, 27 Apr 2014 22:38:51 +0200
Subject: [PATCH] add 'delete' action to comments

---
 browser/configure.zcml       |  8 ++++++++
 browser/form.py              | 26 +++++++++++++++++++++++---
 organize/comment/browser.py  | 17 +++++++++++++++--
 organize/stateful/browser.py |  1 +
 4 files changed, 47 insertions(+), 5 deletions(-)

diff --git a/browser/configure.zcml b/browser/configure.zcml
index 75e5d7d..e7209b8 100644
--- a/browser/configure.zcml
+++ b/browser/configure.zcml
@@ -561,6 +561,14 @@
       factory="loops.browser.concept.TabbedPage"
       permission="zope.View" />
 
+  <!-- delete object action -->
+
+  <page
+      name="delete_object"
+      for="loops.interfaces.INode"
+      class="loops.browser.form.DeleteObject"
+      permission="zope.ManageContent" />
+
   <!-- dialogs/forms (end-user views) -->
 
   <page
diff --git a/browser/form.py b/browser/form.py
index 8fcda99..04e3ade 100755
--- a/browser/form.py
+++ b/browser/form.py
@@ -1,5 +1,5 @@
 #
-#  Copyright (c) 2012 Helmut Merz helmutm@cy55.de
+#  Copyright (c) 2014 Helmut Merz helmutm@cy55.de
 #
 #  This program is free software; you can redistribute it and/or modify
 #  it under the terms of the GNU General Public License as published by
@@ -20,12 +20,13 @@
 Classes for form presentation and processing.
 """
 
+from urllib import urlencode
+from zope.app.container.contained import ObjectRemovedEvent
 from zope import component, interface, schema
 from zope.component import adapts
 from zope.event import notify
 from zope.interface import Interface
 from zope.lifecycleevent import ObjectCreatedEvent, ObjectModifiedEvent
-
 from zope.app.container.interfaces import INameChooser
 from zope.app.container.contained import ObjectAddedEvent
 from zope.app.pagetemplate import ViewPageTemplateFile
@@ -35,7 +36,7 @@ from zope.publisher.browser import FileUpload
 from zope.publisher.interfaces import BadRequest
 from zope.security.interfaces import ForbiddenAttribute, Unauthorized
 from zope.security.proxy import isinstance, removeSecurityProxy
-from zope.traversing.api import getName
+from zope.traversing.api import getName, getParent
 
 from cybertools.ajax import innerHtml
 from cybertools.browser.form import FormController
@@ -68,6 +69,25 @@ from loops.util import _
 from loops.versioning.interfaces import IVersionable
 
 
+# delete object
+
+class DeleteObject(NodeView):
+
+    isTopLevel = True
+
+    def __call__(self):
+        # todo: check permission; check security code
+        form = self.request.form
+        obj = util.getObjectForUid(form['uid'])
+        container = getParent(obj)
+        notify(ObjectRemovedEvent(obj))
+        del container[getName(obj)]
+        message = 'The object requested has been deleted.'
+        params = [('loops.message', message.encode('UTF-8'))]
+        nextUrl = '%s?%s' % (self.request.URL[-1], urlencode(params))
+        return self.request.response.redirect(nextUrl)
+
+
 # forms
 
 class ObjectForm(NodeView):
diff --git a/organize/comment/browser.py b/organize/comment/browser.py
index 572e7f8..f7efe0d 100644
--- a/organize/comment/browser.py
+++ b/organize/comment/browser.py
@@ -27,7 +27,7 @@ from zope.security import checkPermission
 
 from cybertools.browser.action import actions
 from cybertools.tracking.btree import TrackingStorage
-from loops.browser.action import DialogAction
+from loops.browser.action import Action, DialogAction
 from loops.browser.common import BaseView
 from loops.browser.form import ObjectForm, EditObject
 from loops.browser.node import NodeView
@@ -101,7 +101,20 @@ class CommentsView(NodeView):
                         stateful=comment.track,
                         url=url,
                         onClick=onClick)
-        return [stateAct]
+        actions = [stateAct]
+        if not checkPermission('loops.EditRestricted', self.context):
+            return actions
+        baseUrl = self.page.virtualTargetUrl
+        url = '%s/delete_object?uid=%s' % (baseUrl, trackUid)
+        onClick = _("return confirm('Do you really want to delete this object?')")
+        delAct = Action(self, 
+                        url=url,
+                        description=_('Delete Comment'),
+                        icon='cybertools.icons/delete.png',
+                        cssClass='icon-action',
+                        onClick=onClick)
+        actions.append(delAct)
+        return actions
 
 
 class CommentDetails(TrackDetails):
diff --git a/organize/stateful/browser.py b/organize/stateful/browser.py
index 7ad658c..24604f7 100644
--- a/organize/stateful/browser.py
+++ b/organize/stateful/browser.py
@@ -62,6 +62,7 @@ class StateAction(Action):
 
     url = None
     definition = None
+    cssClass = 'icon-action'
 
     @Lazy
     def stateful(self):