зеркало из https://github.com/mozilla/gecko-dev.git
170 строки
5.2 KiB
C++
170 строки
5.2 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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// CAutoCompleteURLEditField.h
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// Subclass of CURLEditField that calls urlMatch function to do
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// URL string matching
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#include "CAutoCompleteURLEditField.h"
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#include <string>
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#include "CAutoPtrXP.h"
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#include <PP_Types.h> // for Char16 typedef
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#include <UKeyFilters.h> // for UKeyFilters::IsPrintingChar proto
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#include <LowMem.h> // for LMGetTicks() proto
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#include "xp_mem.h" // for XP_FREE macro
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#include "glhist.h" // for urlMatch proto
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CAutoCompleteURLEditField::CAutoCompleteURLEditField(LStream* inStream)
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: CURLEditField(inStream)
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, mNextMatchTime(ULONG_MAX)
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, mStartOver(true)
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{
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}
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// NOTE: I believe UKeyFilters::IsPrintingChar() makes this method
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// i18n unfriendly, but that's just a guess.
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Boolean CAutoCompleteURLEditField::HandleKeyPress(const EventRecord& inKeyEvent)
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{
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Char16 theChar = inKeyEvent.message & charCodeMask;
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// NOTE: I believe UKeyFilters::IsPrintingChar() makes this method
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// i18n unfriendly, but that's just a guess.
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if (UKeyFilters::IsPrintingChar(theChar))
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mNextMatchTime = ::LMGetTicks() + kMatchDelay;
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// urlMatch is optimized to search from the current entry when
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// the search string is simply getting longer. But if the user
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// edits the existing text, we want to search again from the start
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if (UKeyFilters::IsTEDeleteKey(theChar) ||
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UKeyFilters::IsTECursorKey(theChar) ||
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UKeyFilters::IsExtraEditKey(theChar))
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{
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mStartOver = true;
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}
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return Inherited::HandleKeyPress(inKeyEvent);
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}
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void CAutoCompleteURLEditField::ClickSelf(const SMouseDownEvent& inMouseDown)
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{
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Inherited::ClickSelf(inMouseDown);
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// this click can result in a selection that allows the user to
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// overtype selected text. So autocomplete on the whole thing
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// again
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mStartOver = true;
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}
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#pragma mark -
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class CAutocompleteTypingAction : public LTETypingAction
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{
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public:
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CAutocompleteTypingAction()
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: LTETypingAction(nil, nil, nil) {}
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void UpdateAfterAutocomplete(Int16 inNewLength);
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};
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void CAutocompleteTypingAction::UpdateAfterAutocomplete(Int16 inNewLength)
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{
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mTypingEnd = inNewLength;
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}
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#pragma mark -
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void CAutoCompleteURLEditField::SpendTime(const EventRecord &inMacEvent)
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{
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if (LMGetTicks() >= mNextMatchTime)
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{
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autoCompStatus status = notFoundDone; // safe in case of throw below
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try
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{
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char urlText[2048];
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Int32 urlLength = sizeof(urlText);
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GetDescriptorLen(urlText, urlLength);
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if (urlLength > 0)
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{
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string originalText = urlText;
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// remove selection from search string
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UInt16 selStart = (**GetMacTEH()).selStart;
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UInt16 selEnd = (**GetMacTEH()).selEnd;
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if (selEnd - selStart > 0)
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memmove(urlText + selStart,
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urlText + selEnd,
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1 + (**GetMacTEH()).teLength - selEnd);
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#ifdef DEBUG
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if (mStartOver)
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mTimesSearched = 0;
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mTimesSearched ++;
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#endif
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char* tempResult = NULL;
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status = urlMatch(urlText, &tempResult, mStartOver, false);
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CAutoPtrXP<char> result = tempResult;
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mStartOver = false;
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// urlMatch will return foundDone even if it is returning the same
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// string it found last time. So don't bother doing all the
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// processing if that is the case.
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if (status == foundDone && result.get() && result.get() != originalText )
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{
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selEnd = strlen(result.get());
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SetDescriptorLen(result.get(), selEnd);
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FocusDraw(); // SetDescriptor() mucks with the port rect
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// then set selection
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::TESetSelect(selStart, selEnd, GetMacTEH());
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if (mTypingAction)
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{
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// If the user undoes, she wants to undo the autocompleted text AND the typing.
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// This is a static cast, whose purpose is to get at the protected member
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// mTypingEnd of the LTETypingAction class. Being a static_cast of one kind
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// of class to another kind of class, it is, officially, skanky. If you don't
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// want to be skanky, you could just cancel
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// the undoability of the user's typed characters after a successful
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// autocomplete, by calling PostAction(nil) instead.
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// This would be doing the user a disservice, though.
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CAutocompleteTypingAction* acTypingAction
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= dynamic_cast<CAutocompleteTypingAction*>(mTypingAction);
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acTypingAction->UpdateAfterAutocomplete(selEnd);
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}
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}
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}
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}
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catch(...)
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{
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}
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// we want to keep searching next time we are called. mNextMatchTime is thus only
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// updated when the user starts typing again, or we complete (successfully or not)
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if (status != stillSearching)
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{
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mStartOver = true;
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mNextMatchTime = ULONG_MAX;
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}
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}
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Inherited::SpendTime(inMacEvent);
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}
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