completion buffers huzzah!!

--HG--
branch : pmacs2

application.py

@@ -141,8 +141,9 @@ class Application(object):
         width  = self.x
 
         # buffer list stuff
-        self.bufferlist  = bufferlist.BufferList(height, width)
-        self.active_slot = 0
+        self.bufferlist    = bufferlist.BufferList(height, width)
+        self.active_slot   = 0
+        self.complete_slot = None
 
         # run user custom code here
         self.rcerror = None
@@ -199,6 +200,70 @@ class Application(object):
         curses.nonl()
         curses.def_prog_mode()
 
+    def completion_window_is_open(self):
+        n = self.complete_slot
+        if n is None:
+            pass
+        elif n >= len(self.bufferlist.slots):
+            self.complete_slot = None
+        elif self.bufferlist.slots[n].window is None:
+            self.complete_slot = None
+        elif not hasattr(self.bufferlist.slots[n].window.buffer, '_completion'):
+            self.complete_slot = None
+        else:
+            return True
+        return False
+
+    def get_completion_window(self):
+        return self.bufferlist.slots[self.complete_slot].window
+
+    def open_completion_buffer(self, s, candidates):
+        opened   = False
+        previous = None
+        if len(self.bufferlist.slots) == 1:
+            self.add_slot()
+            opened = True
+
+        n = len(self.bufferlist.slots) - 1
+        if self.active_slot == n:
+            n -= 1
+
+        if not opened:
+            previous = self.bufferlist.slots[n].window.buffer
+
+        lines = ["This is a completion buffer:", ""]
+        if len(candidates) > self.bufferlist.slots[n].height:
+            m = len(candidates) - (len(candidates) // 2)
+            mlen = 0
+            for c in candidates[:m]:
+                mlen = max(mlen, len(c))
+            for i in range(0, m):
+                if m + i < len(candidates):
+                    c1, c2 = candidates[i * 2], candidates[i * 2 + 1]
+                    lines.append("%-*s  %-s" % (mlen, c1, c2))
+                else:
+                    lines.append(candidates[i * 2])
+        else:
+            lines = list(candidates)
+        data = '\n'.join(lines)
+
+        b             = self.data_buffer("*Completions*", data, switch_to=False)
+        b._completion = s
+        b._opened     = opened
+        b._previous   = previous
+        self.bufferlist.set_slot(n, b)
+        self.complete_slot = n
+
+    def close_completion_buffer(self):
+        w = self.get_completion_window()
+        opened = w.buffer._opened
+        if opened:
+            self.bufferlist.remove_slot(self.complete_slot)
+        else:
+            self.bufferlist.set_slot(self.complete_slot, w.buffer._previous)
+            self.close_buffer(w.buffer)
+        self.complete_slot = None
+
     def set_completer(self, datatype, completer):
         method.DATATYPES[datatype] = completer
 
@@ -246,6 +311,17 @@ class Application(object):
         return (slot.height, slot.width)
 
     # files and stuff
+    def close_buffer(self, b):
+        self.bufferlist.remove_buffer(b)
+        b.close()
+        active_slot = self.bufferlist.slots[self.active_slot]
+        for i in range(0, len(self.bufferlist.slots)):
+            if self.bufferlist.slots[i].is_empty():
+                if self.bufferlist.hidden_buffers:
+                    self.bufferlist.set_slot(i, self.bufferlist.hidden_buffers[0])
+                else:
+                    self.bufferlist.set_slot(i, active_slot.window.buffer)
+    
     def open_path(self, path, binary=False, cipher=None, password=None):
         path = os.path.abspath(os.path.realpath(util.expand_tilde(path)))
         b = self.get_buffer_by_path(path)
@@ -369,6 +445,7 @@ class Application(object):
         self.add_buffer(b)
         if switch_to:
             self.switch_buffer(b)
+        return b
     def color_data_buffer(self, name, data, switch_to=True, modename='colortext'):
         if self.has_buffer_name(name):
             b = self.bufferlist.buffer_names[name]

bufferlist.py

@@ -125,6 +125,11 @@ class BufferList(object):
             if hasattr(b, 'path') and b.path == path:
                 return b
         return None
+    def close_buffer(self, b):
+        for i in range(0, len(self.slots)):
+            slot = self.slots[i]
+            if self.slots[i].window is not None and self.slots[i].window.buffer is b:
+                self.unset_slot(i)
     def remove_buffer(self, b):
         assert b in self.buffers, "buffer %s does not exist" % (b.name())
         for i in range(0, len(self.slots)):

method/__init__.py

@@ -809,6 +809,8 @@ class Cancel(Method):
     '''Cancel command in-progress, and return to the main buffer'''
     def execute(self, w, **vargs):
         w.application.close_mini_buffer()
+        if w.application.completion_window_is_open():
+            w.application.close_completion_buffer()
         w.set_error('Cancel')
 
 class SplitWindow(Method):

method/buffers.py

@@ -70,10 +70,7 @@ class KillBuffer(Method):
     def _doit(self):
         a = self._old_window.application
         b = self._to_kill
-        if a.bufferlist.is_buffer_visible(b):
-            a.bufferlist.set_slot(a.active_slot, a.bufferlist.hidden_buffers[0])
-        a.bufferlist.remove_buffer(b)
-        b.close()
+        a.close_buffer(b)
     def _callback(self, v):
         a = self._old_window.application
         if v == 'yes':

mode/mini.py

@@ -1,25 +1,70 @@
-import method, mode
+import string
+import buffer, method, mode, window
+
+class MiniInsertString(method.InsertString):
+    _is_method = False
+    def __init__(self, s):
+        method.InsertString.__init__(self, s)
+        self.name = "mini-insert-string-%s" % s
+    def _execute(self, w, **vargs):
+        try:
+            app = w.application
+            w.insert_string_at_cursor(self.string)
+            if app.completion_window_is_open():
+                app.close_completion_buffer()
+        except buffer.ReadOnlyError:
+            w.set_error('Buffer is read-only')
+
+class MiniInsertSpace(method.Method):
+    def _execute(self, w, **vargs):
+        try:
+            app = w.application
+            w.insert_string_at_cursor(' ')
+            if app.completion_window_is_open():
+                app.close_completion_buffer()
+        except buffer.ReadOnlyError:
+            w.set_error('Buffer is read-only')
 
 class MiniCallback(method.Method):
-    def execute(self, window, **vargs):
-        window.buffer.do_callback()
+    def execute(self, w, **vargs):
+        app = w.application
+        if app.completion_window_is_open():
+            app.close_completion_buffer()
+        w.buffer.do_callback()
 
 class MiniTabComplete(method.Method):
-    def execute(self, window, **vargs):
-        b = window.buffer
+    def execute(self, w, **vargs):
+        app = w.application
+        b   = w.buffer
         if b.tabber is None:
-            window.application.set_error("No tab completion")
+            w.application.set_error("No tab completion")
             return
         s1 = b.make_string()
-        s2, exists, complete = b.tabber.tab_string(s1, window)
+        s2, exists, complete = b.tabber.tab_string(s1, w)
         b.set_data(s2)
 
+        if app.completion_window_is_open():
+            w2 = app.get_completion_window()
+            if w2.last_is_visible():
+                w2.goto_beginning()
+            else:
+                w2.page_down()
+        else:
+            candidates = sorted(b.tabber.get_candidates(s1))
+            if len(candidates) > 1:
+                app.open_completion_buffer(s2, candidates)
+
 class Mini(mode.Fundamental):
     modename = 'Mini'
-    actions  = [MiniCallback, MiniTabComplete]
+    actions  = [MiniCallback, MiniTabComplete, MiniInsertSpace]
     def __init__(self, w):
         mode.Fundamental.__init__(self, w)
         self.add_bindings('mini-callback', ('RETURN',))
         self.add_bindings('mini-tab-complete', ('TAB',))
 
+        # create all the insert actions for the basic text input
+        for c in string.letters + string.digits + string.punctuation:
+            self.add_action_and_bindings(MiniInsertString(c), (c,))
+        self.add_bindings('mini-insert-space', ('SPACE',))
+
 install = Mini.install

searchutil.py

@@ -73,7 +73,7 @@ def find(r, w, move=False, direction='next', start=None, end=None):
             break
     if newc:
         w.goto(newc[0])
-    else:
+    elif ranges:
         i = 0
         if direction == 'next':
             i = -1