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Extend the auto-completion framework in order to support using page-up/down

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to navigate the choices list.

git-svn-id: http://svn.haiku-os.org/webpositive/webkit/trunk@501 94f232f2-1747-11df-bad5-a5bfde151594
This commit is contained in:
stippi 2010-05-18 18:59:34 +00:00 committed by Alexandre Deckner
parent 90a69c8e1d
commit 37876e4b33
5 changed files with 102 additions and 7 deletions
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30
src/apps/webpositive/autocompletion/AutoCompleter.cpp
View File

@ -158,6 +158,36 @@ BAutoCompleter::IsChoiceSelected() const
}
int32
BAutoCompleter::CountChoices() const
{
if (fCompletionStyle && fCompletionStyle->GetChoiceModel())
return fCompletionStyle->GetChoiceModel()->CountChoices();
else
return 0;
}
int32
BAutoCompleter::CountVisibleChoices() const
{
if (fCompletionStyle && fCompletionStyle->GetChoiceView())
return fCompletionStyle->GetChoiceView()->CountVisibleChoices();
else
return 0;
}
int32
BAutoCompleter::SelectedChoiceIndex() const
{
if (fCompletionStyle)
return fCompletionStyle->SelectedChoiceIndex();
else
return -1;
}
void
BAutoCompleter::ApplyChoice(bool hideChoices)
{

5
src/apps/webpositive/autocompletion/AutoCompleter.h
View File

@ -83,6 +83,7 @@ public:
= 0;
virtual void HideChoices() = 0;
virtual bool ChoicesAreShown() = 0;
virtual int32 CountVisibleChoices() const = 0;
};
class CompletionStyle {
@ -97,6 +98,7 @@ public:
virtual bool SelectNext(bool wrap = false) = 0;
virtual bool SelectPrevious(bool wrap = false) = 0;
virtual bool IsChoiceSelected() const = 0;
virtual int32 SelectedChoiceIndex() const = 0;
virtual void ApplyChoice(bool hideChoices = true) = 0;
virtual void CancelChoice() = 0;
@ -137,6 +139,9 @@ protected:
bool SelectNext(bool wrap = false);
bool SelectPrevious(bool wrap = false);
bool IsChoiceSelected() const;
int32 CountChoices() const;
int32 CountVisibleChoices() const;
int32 SelectedChoiceIndex() const;
void ApplyChoice(bool hideChoices = true);
void CancelChoice();

50
src/apps/webpositive/autocompletion/AutoCompleterDefaultImpl.cpp
View File

@ -105,6 +105,13 @@ BDefaultCompletionStyle::IsChoiceSelected() const
}
int32
BDefaultCompletionStyle::SelectedChoiceIndex() const
{
return fSelectedIndex;
}
void
BDefaultCompletionStyle::ApplyChoice(bool hideChoices)
{
@ -187,13 +194,13 @@ BDefaultCompletionStyle::EditViewStateChanged(bool updateChoices)
// #pragma mark - BDefaultChoiceView::ListView
static const int32 BM_INVOKED = 'bmin';
static const int32 MSG_INVOKED = 'invk';
BDefaultChoiceView::ListView::ListView(
BAutoCompleter::CompletionStyle* completer)
:
BListView(BRect(0,0,100,100), "ChoiceViewList"),
BListView(BRect(0, 0, 100, 100), "ChoiceViewList"),
fCompleter(completer)
{
// we need to check if user clicks outside of window-bounds:
@ -205,7 +212,7 @@ void
BDefaultChoiceView::ListView::AttachedToWindow()
{
SetTarget(this);
SetInvocationMessage(new BMessage(BM_INVOKED));
SetInvocationMessage(new BMessage(MSG_INVOKED));
BListView::AttachedToWindow();
}
@ -221,7 +228,7 @@ void
BDefaultChoiceView::ListView::MessageReceived(BMessage* message)
{
switch(message->what) {
case BM_INVOKED:
case MSG_INVOKED:
fCompleter->ApplyChoice();
break;
default:
@ -316,7 +323,8 @@ BDefaultChoiceView::ListItem::DrawItem(BView* owner, BRect frame,
BDefaultChoiceView::BDefaultChoiceView()
:
fWindow(NULL),
fListView(NULL)
fListView(NULL),
fMaxVisibleChoices(5)
{
}
@ -359,7 +367,7 @@ BDefaultChoiceView::ShowChoices(BAutoCompleter::CompletionStyle* completer)
fListView = new ListView(completer);
int32 count = choiceModel->CountChoices();
for(int32 i=0; i<count; ++i) {
for(int32 i = 0; i<count; ++i) {
fListView->AddItem(
new ListItem(choiceModel->ChoiceAt(i))
);
@ -370,7 +378,7 @@ BDefaultChoiceView::ShowChoices(BAutoCompleter::CompletionStyle* completer)
| B_AVOID_FOCUS | B_ASYNCHRONOUS_CONTROLS);
fWindow->AddChild(fListView);
int32 visibleCount = min_c(count, 5);
int32 visibleCount = min_c(count, fMaxVisibleChoices);
float listHeight = fListView->ItemFrame(visibleCount - 1).bottom + 1;
BRect pvRect = editView->GetAdjustmentFrame();
@ -407,3 +415,31 @@ BDefaultChoiceView::ChoicesAreShown()
return (fWindow != NULL);
}
int32
BDefaultChoiceView::CountVisibleChoices() const
{
return min_c(fMaxVisibleChoices, fListView->CountItems());
}
void
BDefaultChoiceView::SetMaxVisibleChoices(int32 choices)
{
if (choices < 1)
choices = 1;
if (choices == fMaxVisibleChoices)
return;
fMaxVisibleChoices = choices;
// TODO: Update live?
}
int32
BDefaultChoiceView::MaxVisibleChoices() const
{
return fMaxVisibleChoices;
}

7
src/apps/webpositive/autocompletion/AutoCompleterDefaultImpl.h
View File

@ -35,6 +35,7 @@ public:
virtual bool SelectNext(bool wrap = false);
virtual bool SelectPrevious(bool wrap = false);
virtual bool IsChoiceSelected() const;
virtual int32 SelectedChoiceIndex() const;
virtual void ApplyChoice(bool hideChoices = true);
virtual void CancelChoice();
@ -60,6 +61,7 @@ protected:
virtual void MessageReceived(BMessage* msg);
virtual void MouseDown(BPoint point);
virtual void AttachedToWindow();
private:
BAutoCompleter::CompletionStyle* fCompleter;
};
@ -84,10 +86,15 @@ public:
BAutoCompleter::CompletionStyle* completer);
virtual void HideChoices();
virtual bool ChoicesAreShown();
virtual int32 CountVisibleChoices() const;
void SetMaxVisibleChoices(int32 choices);
int32 MaxVisibleChoices() const;
private:
BWindow* fWindow;
ListView* fListView;
int32 fMaxVisibleChoices;
};
#endif // _AUTO_COMPLETER_DEFAULT_IMPL_H

17
src/apps/webpositive/autocompletion/TextViewCompleter.cpp
View File

@ -122,6 +122,23 @@ TextViewCompleter::Filter(BMessage* message, BHandler** target)
// See above.
ApplyChoice(false);
return B_SKIP_MESSAGE;
case B_PAGE_UP:
{
int32 index = SelectedChoiceIndex() - CountVisibleChoices();
index = max_c(index, 0);
Select(index);
ApplyChoice(false);
return B_SKIP_MESSAGE;
}
case B_PAGE_DOWN:
{
int32 index = SelectedChoiceIndex() + CountVisibleChoices();
index = min_c(index, CountChoices() - 1);
Select(index);
ApplyChoice(false);
return B_SKIP_MESSAGE;
}
case B_ESCAPE:
CancelChoice();
return B_SKIP_MESSAGE;