mirror of https://github.com/python/cpython
378 lines
8.8 KiB
Python
378 lines
8.8 KiB
Python
# A minimal text editor using MLTE. Based on wed.py.
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#
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# To be done:
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# - Functionality: find, etc.
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from Menu import DrawMenuBar
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from FrameWork import *
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from Carbon import Win
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from Carbon import Ctl
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from Carbon import Qd
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from Carbon import Res
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from Carbon import Scrap
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import os
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import macfs
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from Carbon import MacTextEditor
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from Carbon import Mlte
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UNDOLABELS = [ # Indexed by MLTECanUndo() value
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"Typing", "Cut", "Paste", "Clear", "Font Change", "Color Change", "Size Change",
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"Style Change", "Align Left", "Align Center", "Align Right", "Drop", "Move"]
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class MlteWindow(Window):
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def open(self, path, name, data):
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self.path = path
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self.name = name
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r = windowbounds(400, 400)
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w = Win.NewWindow(r, name, 1, 0, -1, 1, 0)
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self.wid = w
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flags = MacTextEditor.kTXNDrawGrowIconMask|MacTextEditor.kTXNWantHScrollBarMask| \
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MacTextEditor.kTXNWantVScrollBarMask
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self.ted, self.frameid = Mlte.TXNNewObject(None, w, None, flags, MacTextEditor.kTXNTextEditStyleFrameType,
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MacTextEditor.kTXNTextFile, MacTextEditor.kTXNMacOSEncoding)
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self.ted.TXNSetData(MacTextEditor.kTXNTextData, data, 0, 0x7fffffff)
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self.changed = 0
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self.do_postopen()
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self.do_activate(1, None)
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def do_idle(self, event):
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self.ted.TXNIdle()
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self.ted.TXNAdjustCursor(None)
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def do_activate(self, onoff, evt):
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if onoff:
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## self.ted.TXNActivate(self.frameid, 0)
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self.ted.TXNFocus(1)
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self.parent.active = self
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else:
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self.ted.TXNFocus(0)
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self.parent.active = None
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self.parent.updatemenubar()
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def do_update(self, wid, event):
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self.ted.TXNDraw(None)
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def do_postresize(self, width, height, window):
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self.ted.TXNResizeFrame(width, height, self.frameid)
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def do_contentclick(self, local, modifiers, evt):
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self.ted.TXNClick(evt)
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self.parent.updatemenubar()
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def do_char(self, ch, event):
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self.ted.TXNKeyDown(event)
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self.parent.updatemenubar()
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def close(self):
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if self.changed:
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save = EasyDialogs.AskYesNoCancel('Save window "%s" before closing?'%self.name, 1)
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if save > 0:
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self.menu_save()
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elif save < 0:
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return
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if self.parent.active == self:
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self.parent.active = None
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self.ted.TXNDeleteObject()
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del self.ted
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## del self.tedtexthandle
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self.do_postclose()
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def menu_save(self):
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if not self.path:
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self.menu_save_as()
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return # Will call us recursively
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dhandle = self.ted.TXNGetData(0, 0x7fffffff)
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data = dhandle.data
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fp = open(self.path, 'wb') # NOTE: wb, because data has CR for end-of-line
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fp.write(data)
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if data[-1] <> '\r': fp.write('\r')
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fp.close()
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self.changed = 0
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def menu_save_as(self):
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fss, ok = macfs.StandardPutFile('Save as:')
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if not ok: return
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self.path = fss.as_pathname()
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self.name = os.path.split(self.path)[-1]
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self.wid.SetWTitle(self.name)
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self.menu_save()
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def menu_cut(self):
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## self.ted.WESelView()
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self.ted.TXNCut()
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### Mlte.ConvertToPublicScrap()
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## Scrap.ZeroScrap()
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## self.ted.WECut()
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## self.updatescrollbars()
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self.parent.updatemenubar()
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self.changed = 1
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def menu_copy(self):
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## Scrap.ZeroScrap()
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self.ted.TXNCopy()
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### Mlte.ConvertToPublicScrap()
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## self.updatescrollbars()
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self.parent.updatemenubar()
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def menu_paste(self):
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### Mlte.ConvertFromPublicScrap()
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self.ted.TXNPaste()
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## self.updatescrollbars()
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self.parent.updatemenubar()
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self.changed = 1
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def menu_clear(self):
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## self.ted.WESelView()
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self.ted.TXNClear()
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## self.updatescrollbars()
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self.parent.updatemenubar()
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self.changed = 1
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def menu_undo(self):
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self.ted.TXNUndo()
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## self.updatescrollbars()
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self.parent.updatemenubar()
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def menu_redo(self):
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self.ted.TXNRedo()
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## self.updatescrollbars()
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self.parent.updatemenubar()
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def have_selection(self):
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start, stop = self.ted.TXNGetSelection()
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return start < stop
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def can_paste(self):
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return Mlte.TXNIsScrapPastable()
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def can_undo(self):
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can, which = self.ted.TXNCanUndo()
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if not can:
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return None
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if which >= len(UNDOLABELS):
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# Unspecified undo
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return "Undo"
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which = UNDOLABELS[which]
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return "Undo "+which
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def can_redo(self):
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can, which = self.ted.TXNCanRedo()
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if not can:
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return None
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if which >= len(UNDOLABELS):
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# Unspecified undo
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return "Redo"
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which = UNDOLABELS[which]
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return "Redo "+which
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class Mlted(Application):
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def __init__(self):
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Application.__init__(self)
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self.num = 0
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self.active = None
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self.updatemenubar()
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def makeusermenus(self):
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self.filemenu = m = Menu(self.menubar, "File")
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self.newitem = MenuItem(m, "New window", "N", self.open)
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self.openitem = MenuItem(m, "Open...", "O", self.openfile)
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self.closeitem = MenuItem(m, "Close", "W", self.closewin)
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m.addseparator()
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self.saveitem = MenuItem(m, "Save", "S", self.save)
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self.saveasitem = MenuItem(m, "Save as...", "", self.saveas)
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m.addseparator()
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self.quititem = MenuItem(m, "Quit", "Q", self.quit)
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self.editmenu = m = Menu(self.menubar, "Edit")
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self.undoitem = MenuItem(m, "Undo", "Z", self.undo)
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self.redoitem = MenuItem(m, "Redo", None, self.redo)
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m.addseparator()
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self.cutitem = MenuItem(m, "Cut", "X", self.cut)
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self.copyitem = MenuItem(m, "Copy", "C", self.copy)
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self.pasteitem = MenuItem(m, "Paste", "V", self.paste)
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self.clearitem = MenuItem(m, "Clear", "", self.clear)
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# Groups of items enabled together:
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self.windowgroup = [self.closeitem, self.saveitem, self.saveasitem, self.editmenu]
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self.focusgroup = [self.cutitem, self.copyitem, self.clearitem]
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self.windowgroup_on = -1
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self.focusgroup_on = -1
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self.pastegroup_on = -1
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self.undo_label = "never"
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self.redo_label = "never"
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def updatemenubar(self):
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changed = 0
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on = (self.active <> None)
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if on <> self.windowgroup_on:
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for m in self.windowgroup:
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m.enable(on)
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self.windowgroup_on = on
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changed = 1
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if on:
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# only if we have an edit menu
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on = self.active.have_selection()
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if on <> self.focusgroup_on:
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for m in self.focusgroup:
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m.enable(on)
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self.focusgroup_on = on
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changed = 1
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on = self.active.can_paste()
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if on <> self.pastegroup_on:
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self.pasteitem.enable(on)
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self.pastegroup_on = on
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changed = 1
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on = self.active.can_undo()
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if on <> self.undo_label:
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if on:
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self.undoitem.enable(1)
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self.undoitem.settext(on)
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self.undo_label = on
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else:
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self.undoitem.settext("Nothing to undo")
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self.undoitem.enable(0)
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changed = 1
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on = self.active.can_redo()
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if on <> self.redo_label:
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if on:
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self.redoitem.enable(1)
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self.redoitem.settext(on)
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self.redo_label = on
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else:
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self.redoitem.settext("Nothing to redo")
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self.redoitem.enable(0)
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changed = 1
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if changed:
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DrawMenuBar()
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#
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# Apple menu
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#
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def do_about(self, id, item, window, event):
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EasyDialogs.Message("A simple single-font text editor based on MacTextEditor")
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#
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# File menu
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#
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def open(self, *args):
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self._open(0)
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def openfile(self, *args):
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self._open(1)
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def _open(self, askfile):
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if askfile:
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fss, ok = macfs.StandardGetFile('TEXT')
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if not ok:
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return
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path = fss.as_pathname()
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name = os.path.split(path)[-1]
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try:
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fp = open(path, 'rb') # NOTE binary, we need cr as end-of-line
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data = fp.read()
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fp.close()
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except IOError, arg:
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EasyDialogs.Message("IOERROR: "+`arg`)
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return
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else:
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path = None
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name = "Untitled %d"%self.num
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data = ''
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w = MlteWindow(self)
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w.open(path, name, data)
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self.num = self.num + 1
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def closewin(self, *args):
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if self.active:
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self.active.close()
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else:
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EasyDialogs.Message("No active window?")
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def save(self, *args):
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if self.active:
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self.active.menu_save()
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else:
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EasyDialogs.Message("No active window?")
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def saveas(self, *args):
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if self.active:
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self.active.menu_save_as()
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else:
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EasyDialogs.Message("No active window?")
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def quit(self, *args):
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for w in self._windows.values():
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w.close()
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if self._windows:
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return
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self._quit()
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#
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# Edit menu
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#
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def undo(self, *args):
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if self.active:
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self.active.menu_undo()
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else:
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EasyDialogs.Message("No active window?")
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def redo(self, *args):
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if self.active:
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self.active.menu_redo()
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else:
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EasyDialogs.Message("No active window?")
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def cut(self, *args):
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if self.active:
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self.active.menu_cut()
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else:
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EasyDialogs.Message("No active window?")
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def copy(self, *args):
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if self.active:
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self.active.menu_copy()
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else:
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EasyDialogs.Message("No active window?")
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def paste(self, *args):
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if self.active:
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self.active.menu_paste()
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else:
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EasyDialogs.Message("No active window?")
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def clear(self, *args):
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if self.active:
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self.active.menu_clear()
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else:
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EasyDialogs.Message("No active window?")
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#
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# Other stuff
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#
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def idle(self, event):
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if self.active:
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self.active.do_idle(event)
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else:
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Qd.SetCursor(Qd.GetQDGlobalsArrow())
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def main():
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Mlte.TXNInitTextension(0)
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try:
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App = Mlted()
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App.mainloop()
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finally:
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Mlte.TXNTerminateTextension()
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if __name__ == '__main__':
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main()
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