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// Scintilla source code edit control
/** @file AutoComplete.cxx
** Defines the auto completion list box.
**/
// Copyright 1998-2003 by Neil Hodgson <neilh@scintilla.org>
// The License.txt file describes the conditions under which this software may be distributed.
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include "Platform.h"
#include "CharClassify.h"
#include "AutoComplete.h"
#ifdef SCI_NAMESPACE
using namespace Scintilla;
#endif
AutoComplete::AutoComplete() :
active(false),
separator(' '),
typesep('?'),
ignoreCase(false),
chooseSingle(false),
lb(0),
posStart(0),
startLen(0),
cancelAtStartPos(true),
autoHide(true),
dropRestOfWord(false) {
lb = ListBox::Allocate();
stopChars[0] = '\0';
fillUpChars[0] = '\0';
}
AutoComplete::~AutoComplete() {
if (lb) {
lb->Destroy();
delete lb;
lb = 0;
}
}
bool AutoComplete::Active() const {
return active;
}
void AutoComplete::Start(Window &parent, int ctrlID,
int position, Point location, int startLen_,
int lineHeight, bool unicodeMode) {
if (active) {
Cancel();
}
lb->Create(parent, ctrlID, location, lineHeight, unicodeMode);
lb->Clear();
active = true;
startLen = startLen_;
posStart = position;
}
void AutoComplete::SetStopChars(const char *stopChars_) {
strncpy(stopChars, stopChars_, sizeof(stopChars));
stopChars[sizeof(stopChars) - 1] = '\0';
}
bool AutoComplete::IsStopChar(char ch) {
return ch && strchr(stopChars, ch);
}
void AutoComplete::SetFillUpChars(const char *fillUpChars_) {
strncpy(fillUpChars, fillUpChars_, sizeof(fillUpChars));
fillUpChars[sizeof(fillUpChars) - 1] = '\0';
}
bool AutoComplete::IsFillUpChar(char ch) {
return ch && strchr(fillUpChars, ch);
}
void AutoComplete::SetSeparator(char separator_) {
separator = separator_;
}
char AutoComplete::GetSeparator() const {
return separator;
}
void AutoComplete::SetTypesep(char separator_) {
typesep = separator_;
}
char AutoComplete::GetTypesep() const {
return typesep;
}
void AutoComplete::SetList(const char *list) {
lb->SetList(list, separator, typesep);
}
void AutoComplete::Show(bool show) {
lb->Show(show);
if (show)
lb->Select(0);
}
void AutoComplete::Cancel() {
if (lb->Created()) {
lb->Clear();
lb->Destroy();
active = false;
}
}
void AutoComplete::Move(int delta) {
int count = lb->Length();
int current = lb->GetSelection();
current += delta;
if (current >= count)
current = count - 1;
if (current < 0)
current = 0;
lb->Select(current);
}
void AutoComplete::Select(const char *word) {
size_t lenWord = strlen(word);
int location = -1;
const int maxItemLen=1000;
char item[maxItemLen];
int start = 0; // lower bound of the api array block to search
int end = lb->Length() - 1; // upper bound of the api array block to search
while ((start <= end) && (location == -1)) { // Binary searching loop
int pivot = (start + end) / 2;
lb->GetValue(pivot, item, maxItemLen);
int cond;
if (ignoreCase)
cond = CompareNCaseInsensitive(word, item, lenWord);
else
cond = strncmp(word, item, lenWord);
if (!cond) {
// Find first match
while (pivot > start) {
lb->GetValue(pivot-1, item, maxItemLen);
if (ignoreCase)
cond = CompareNCaseInsensitive(word, item, lenWord);
else
cond = strncmp(word, item, lenWord);
if (0 != cond)
break;
--pivot;
}
location = pivot;
if (ignoreCase) {
// Check for exact-case match
for (; pivot <= end; pivot++) {
lb->GetValue(pivot, item, maxItemLen);
if (!strncmp(word, item, lenWord)) {
location = pivot;
break;
}
if (CompareNCaseInsensitive(word, item, lenWord))
break;
}
}
} else if (cond < 0) {
end = pivot - 1;
} else if (cond > 0) {
start = pivot + 1;
}
}
if (location == -1 && autoHide)
Cancel();
else
lb->Select(location);
}