*** empty log message ***

lib/python/TreeDisplay/TreeTag.py

@@ -9,8 +9,8 @@
 #       rights reserved. 
 #
 ############################################################################ 
-__rcs_id__='$Id: TreeTag.py,v 1.3 1997/09/04 22:08:19 brian Exp $'
-__version__='$Revision: 1.3 $'[11:-2]
+__rcs_id__='$Id: TreeTag.py,v 1.4 1997/09/09 23:09:03 brian Exp $'
+__version__='$Revision: 1.4 $'[11:-2]
 
 from DocumentTemplate.DT_Util import *
 from DocumentTemplate.DT_String import String
@@ -41,37 +41,43 @@ from urllib import quote, unquote
 
 pyid=id # Copy builtin
 
+# Generified example of tree support a la discussion...
 
 def tpRender(self, md, section):
+    
     # Check for collapse all, expand all, and state
-    try:    collapse_all=md['collapse_all']
+    try: collapse_all=md['collapse_all']
     except: collapse_all=None
     if collapse_all:
 	state=[]
     else:
-	try:    expand_all=md['expand_all']
+	try: expand_all=md['expand_all']
 	except: expand_all=None
 	if expand_all:
+            # in case of expand all - to maintain state correctly we
+            # have to make state be the ids of ALL subobjects which
+            # are non-empty (recursively).
             state=tpValuesIds(self)
 	else:
             try:
                 state=md['state']
                 if state[0] != '[': state=unquote(state)
                 state=list(eval(state,{'__builtins__':{}}))
-            except:
-		state=[]
-
-    # Save state in a cookie
-    if state: md['RESPONSE'].setCookie('state',quote(str(state)[1:-1]+','))
-    else:     md['RESPONSE'].expireCookie('state')
+            except: state=[]
+    
+    
+    # Try to save state in a cookie as well...
+    # md['RESPONSE'].setCookie('state',state)
     
     root=md['URL']
     l=rfind(root, '/')
     if l >= 0: root=root[l+1:]
+    
     url=''
+
     data =[]
 
-    data.append('<TABLE CELLSPACING="0">\n')
+    data.append('<table cellspacing=0>\n')
     colspan=1+tpStateLevel(state)
 
     treeData={'tree-root-url': root}
@@ -80,9 +86,12 @@ def tpRender(self, md, section):
 	for item in self.tpValues():
 	    data=tpRenderTABLE(item,root,url,state,state,data,colspan,
 			       section,md,treeData)
-	data.append('</TABLE>\n')
+
+	data.append('</table>\n')
+
 	result=join(data,'')
     finally: md.pop(1)
+
     return result
 
 def tpStateLevel(state):
@@ -93,19 +102,15 @@ def tpStateLevel(state):
     return level
 
 def tpValuesIds(self):
-    # This should build the ids of subitems which are
-    # expandable (non-empty). Leaves should never be
-    # in the state - it will screw the colspan counting.
     r=[]
     try:
 	for item in self.tpValues():
 	    try:
-		if item.tpValues():
-		    id=item.tpId()
-		    e=tpValuesIds(item)
-		    if e: id=[id,e]
-		    else: id=[id]
-		    r.append(id)
+		id=item.tpId()
+		e=tpValuesIds(item)
+		if e: id=[id,e]
+		else: id=[id]
+		r.append(id)
 	    except: pass
     except: pass
     return r
@@ -113,19 +118,20 @@ def tpValuesIds(self):
 
 def tpRenderTABLE(self, root_url, url, state, substate, data,
                   colspan, section, md, treeData, level=0):
-    try:    items=self.tpValues()
+
+    # We are being called from above
+
+    try: items=self.tpValues()
     except: items=None
 
     tpUrl=self.tpURL()
     url = (url and ('%s/%s' % (url, tpUrl))) or tpUrl
     treeData['tree-item-url']=url
-    treeData['tree-item-expanded']=0
-
 
-    try:    id=self.tpId()
+    try: id=self.tpId()
     except: id=None
     if id is None:
-	try:    id=self._p_oid
+	try: id=self._p_oid
 	except: id=None
 	if id is None: id=pyid(self)
 
@@ -134,19 +140,20 @@ def tpRenderTABLE(self, root_url, url, state, substate, data,
     output=data.append
 
     # Add prefix
-    output('<TR>\n')
-    if level: output('<TD WIDTH="16"></TD>\n' * level)
+    output('<tr>')
+    if level: output('<td></td>' * level)
 
-    # Add +/- icon
+    # Add tree expand/contract icon
     if items:
-        output('<TD WIDTH="16" VALIGN="TOP">')
+        output('<td valign=top>')
+
         for i in range(len(substate)):
             sub=substate[i]
             if sub[0]==id:
                 exp=i+1
                 break
+
         if exp:
-	    treeData['tree-item-expanded']=1
             del substate[exp-1]
             output('<A HREF="%s?state=%s">%s</A>' %
                    (root_url,quote(str(state)[1:-1]+','), icoMinus))
@@ -157,13 +164,14 @@ def tpRenderTABLE(self, root_url, url, state, substate, data,
                    (root_url,quote(str(state)[1:-1]+','), icoPlus))
             del substate[-1]
     else:
-        output('<TD WIDTH="16">')
-    output('</TD>\n')
+        output('<td>')
+
+    output('</td>\n')
 
     # add item text
-    output('<TD COLSPAN="%s" VALIGN="TOP">' % (colspan-level))
+    output('<td colspan=%s valign=top>' % colspan)
     output(section(self, md))
-    output('</TD>\n</TR>\n')
+    output('</td></tr>\n')
     
     if exp:
         for item in items:
@@ -171,10 +179,16 @@ def tpRenderTABLE(self, root_url, url, state, substate, data,
             data=tpRenderTABLE(item, root_url,url,state,sub[1],data,
 			       colspan, section, md, treeData, level+1)
             if not sub[1]: del sub[1]
+
     return data
 
 
-icoSpace='<IMG SRC="%s/TreeDisplay/Blank_icon.gif" BORDER="0">' % SOFTWARE_URL
-icoPlus ='<IMG SRC="%s/TreeDisplay/Plus_icon.gif" BORDER="0">' % SOFTWARE_URL
-icoMinus='<IMG SRC="%s/TreeDisplay/Minus_icon.gif" BORDER="0">' % SOFTWARE_URL
 
+icoSpace='<IMG SRC="%s/TreeDisplay/Blank_icon.gif" ' \
+         ' BORDER="0">' % SOFTWARE_URL
+
+icoPlus ='<IMG SRC="%s/TreeDisplay/Plus_icon.gif" BORDER="0"'  \
+         ' ALT="+">' % SOFTWARE_URL
+
+icoMinus='<IMG SRC="%s/TreeDisplay/Minus_icon.gif" BORDER="0"' \
+         ' ALT="-">' % SOFTWARE_URL