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