StyledEdit:Implemented StatusLine and R5-like ReadOnly mode

This work was done during GCI2012.

Fixes #3655

Signed-off-by: Siarzhuk Zharski <zharik@gmx.li>

src/apps/stylededit/Constants.h

@@ -78,8 +78,9 @@ const uint32 OPEN_AS_ENCODING			= 'FPoe';
 const uint32 SAVE_AS_ENCODING			= 'FPse';
 const uint32 SAVE_THEN_QUIT				= 'FPsq';
 
-// Update Line Info
-const uint32 UPDATE_LINE				= 'UPln';
+// Update StatusView
+const uint32 UPDATE_STATUS				= 'UPSt';
+const uint32 UNLOCK_FILE				= 'UNLk';
 
 #endif	// CONSTANTS_H
 

src/apps/stylededit/Jamfile

@@ -13,6 +13,7 @@ Application StyledEdit :
 	ColorMenuItem.cpp
 	FindWindow.cpp
 	ReplaceWindow.cpp
+	StatusView.cpp
 	StyledEditApp.cpp
 	StyledEditView.cpp
 	StyledEditWindow.cpp
@@ -26,6 +27,7 @@ DoCatalogs StyledEdit :
 	:
 	FindWindow.cpp
 	ReplaceWindow.cpp
+	StatusView.cpp
 	StyledEditApp.cpp
 	StyledEditWindow.cpp
 ;

src/apps/stylededit/StatusView.cpp

@@ -0,0 +1,257 @@
+/*
+ * Copyright 2002-2012, Haiku, Inc. All Rights Reserved.
+ * Distributed under the terms of the MIT License.
+ *
+ * Authors:
+ *		Vlad Slepukhin
+ *		Siarzhuk Zharski
+ */
+
+
+#include "StatusView.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <Catalog.h>
+#include <CharacterSet.h>
+#include <CharacterSetRoster.h>
+#include <ControlLook.h>
+#include <MenuItem.h>
+#include <Message.h>
+#include <PopUpMenu.h>
+#include <ScrollView.h>
+#include <StringView.h>
+#include <Window.h>
+
+#include "Constants.h"
+
+
+const float kHorzSpacing = 5.f;
+#define UTF8_EXPAND_ARROW "\xe2\x96\xbe"
+
+using namespace BPrivate;
+
+
+#undef B_TRANSLATION_CONTEXT
+#define B_TRANSLATION_CONTEXT "StatusView"
+
+
+StatusView::StatusView(BScrollView* scrollView)
+			:
+			BView(BRect(), "statusview",
+				B_FOLLOW_BOTTOM | B_FOLLOW_LEFT, B_WILL_DRAW),
+			fScrollView(scrollView),
+			fPreferredSize(0., 0.),
+			fReadOnly(false)
+{
+	memset(fCellWidth, 0, sizeof(fCellWidth));
+}
+
+
+StatusView::~StatusView()
+{
+}
+
+
+void
+StatusView::AttachedToWindow()
+{
+	SetFont(be_plain_font);
+	SetFontSize(10.);
+
+	BMessage message(UPDATE_STATUS);
+	message.AddInt32("line", 1);
+	message.AddInt32("column", 1);
+	message.AddString("encoding", "");
+	SetStatus(&message);
+
+	BScrollBar* scrollBar = fScrollView->ScrollBar(B_HORIZONTAL);
+	MoveTo(0., scrollBar->Frame().top);
+
+	rgb_color color = B_TRANSPARENT_COLOR;
+	BView* parent = Parent();
+	if (parent != NULL)
+		color = parent->ViewColor();
+
+	if (color == B_TRANSPARENT_COLOR)
+		color = ui_color(B_PANEL_BACKGROUND_COLOR);
+
+	SetViewColor(color);
+
+	ResizeToPreferred();
+}
+
+
+void
+StatusView::GetPreferredSize(float* _width, float* _height)
+{
+	_ValidatePreferredSize();
+
+	if (_width)
+		*_width = fPreferredSize.width;
+
+	if (_height)
+		*_height = fPreferredSize.height;
+}
+
+
+void
+StatusView::ResizeToPreferred()
+{
+	float width, height;
+	GetPreferredSize(&width, &height);
+
+	if (Bounds().Width() > width)
+		width = Bounds().Width();
+
+	BView::ResizeTo(width, height);
+}
+
+
+void
+StatusView::Draw(BRect updateRect)
+{
+	if (fPreferredSize.width <= 0)
+		return;
+
+	if (be_control_look != NULL) {
+		BRect bounds(Bounds());
+		be_control_look->DrawMenuBarBackground(this,
+			bounds, updateRect,	ViewColor());
+	}
+
+	BRect bounds(Bounds());
+	rgb_color highColor = HighColor();
+	SetHighColor(tint_color(ViewColor(), B_DARKEN_2_TINT));
+	StrokeLine(bounds.LeftTop(), bounds.RightTop());
+
+	float x = bounds.left;
+	for (size_t i = 0; i < kStatusCellCount - 1; i++) {
+		x += fCellWidth[i];
+		StrokeLine(BPoint(x, bounds.top + 3), BPoint(x, bounds.bottom - 3));
+	}
+
+	SetLowColor(ViewColor());
+	SetHighColor(highColor);
+
+	font_height fontHeight;
+	GetFontHeight(&fontHeight);
+
+	x = bounds.left;
+	float y = (bounds.bottom + bounds.top
+		+ ceilf(fontHeight.ascent) - ceilf(fontHeight.descent)) / 2;
+
+	for (size_t i = 0; i < kStatusCellCount; i++) {
+		if (fCellText[i].Length() == 0)
+			continue;
+		DrawString(fCellText[i], BPoint(x + kHorzSpacing, y));
+		x += fCellWidth[i];
+	}
+}
+
+
+void
+StatusView::MouseDown(BPoint where)
+{
+	if (!fReadOnly)
+		return;
+
+	float left = fCellWidth[kPositionCell] + fCellWidth[kEncodingCell];
+	if (where.x < left)
+		return;
+
+	where.x = left;
+	where.y = Bounds().bottom;
+
+	BPopUpMenu *menu = new BPopUpMenu(B_EMPTY_STRING, false, false);
+	menu->AddItem(new BMenuItem(B_TRANSLATE("Unlock file"),
+			new BMessage(UNLOCK_FILE)));
+
+	ConvertToScreen(&where);
+	menu->SetTargetForItems(this);
+	menu->Go(where, true, true,	true);
+}
+
+
+void
+StatusView::SetStatus(BMessage* message)
+{
+	int32 line = 0, column = 0;
+	if (B_OK == message->FindInt32("line", &line)
+		&& B_OK == message->FindInt32("column", &column))
+	{
+		char info[256];
+		snprintf(info, sizeof(info),
+				B_TRANSLATE("line %d, column %d"), line, column);
+		fCellText[kPositionCell].SetTo(info);
+	}
+
+	BString encoding;
+	if (B_OK == message->FindString("encoding", &encoding)) {
+		// sometime corresponding Int-32 "encoding" attrib is read as string :(
+		if (encoding.Length() == 0
+			|| encoding.Compare("\xff\xff") == 0
+			|| encoding.Compare("UTF-8") == 0)
+		{
+			fCellText[kEncodingCell] = "UTF-8";
+		} else {
+			const BCharacterSet* charset
+				= BCharacterSetRoster::FindCharacterSetByName(encoding);
+			fCellText[kEncodingCell]
+				= charset != NULL ? charset->GetPrintName() : "";
+		}
+	}
+
+	bool modified = false;
+	fReadOnly = false;
+	if (B_OK == message->FindBool("modified", &modified) && modified) {
+		fCellText[kFileStateCell] = B_TRANSLATE("Modified");
+	} else if (B_OK == message->FindBool("readOnly", &fReadOnly) && fReadOnly) {
+		fCellText[kFileStateCell] = B_TRANSLATE("Read-only");
+		fCellText[kFileStateCell] << " " UTF8_EXPAND_ARROW;
+	} else
+		fCellText[kFileStateCell].Truncate(0);
+
+	_ValidatePreferredSize();
+	Invalidate();
+}
+
+
+void
+StatusView::_ValidatePreferredSize()
+{
+	float orgWidth = fPreferredSize.width;
+	// width
+	fPreferredSize.width = 0.f;
+	for (size_t i = 0; i < kStatusCellCount; i++) {
+		if (fCellText[i].Length() == 0) {
+			fCellWidth[i] = 0;
+			continue;
+		}
+		float width = ceilf(StringWidth(fCellText[i]));
+		if (width > 0)
+			width += kHorzSpacing * 2;
+		if (width > fCellWidth[i])
+			fCellWidth[i] = width;
+		fPreferredSize.width += fCellWidth[i];
+	}
+
+	// height
+	font_height fontHeight;
+	GetFontHeight(&fontHeight);
+
+	fPreferredSize.height = ceilf(fontHeight.ascent + fontHeight.descent
+		+ fontHeight.leading);
+
+	if (fPreferredSize.height < B_H_SCROLL_BAR_HEIGHT)
+		fPreferredSize.height = B_H_SCROLL_BAR_HEIGHT;
+
+	float delta = fPreferredSize.width - orgWidth;
+	ResizeBy(delta, 0);
+	BScrollBar* scrollBar = fScrollView->ScrollBar(B_HORIZONTAL);
+	scrollBar->ResizeBy(-delta, 0);
+	scrollBar->MoveBy(delta, 0);
+}
+

src/apps/stylededit/StatusView.h

@@ -0,0 +1,50 @@
+/*
+ * Copyright 2002-2012, Haiku, Inc. All Rights Reserved.
+ * Distributed under the terms of the MIT License.
+ *
+ * Authors:
+ *		Vlad Slepukhin
+ *		Siarzhuk Zharski
+ */
+#ifndef STATUS_VIEW_H
+#define STATUS_VIEW_H
+
+
+#include <String.h>
+#include <View.h>
+
+
+enum {
+	kPositionCell,
+	kEncodingCell,
+	kFileStateCell,
+	kStatusCellCount
+};
+
+
+class BScrollView;
+
+class StatusView : public BView {
+public:
+							StatusView(BScrollView* fScrollView);
+							~StatusView();
+
+			void			SetStatus(BMessage* mesage);
+	virtual	void			AttachedToWindow();
+	virtual void			GetPreferredSize(float* _width, float* _height);
+	virtual	void			ResizeToPreferred();
+	virtual	void			Draw(BRect bounds);
+	virtual	void			MouseDown(BPoint point);
+
+private:
+			void			_ValidatePreferredSize();
+
+private:
+			BScrollView*	fScrollView;
+			BSize			fPreferredSize;
+			BString			fCellText[kStatusCellCount];
+			float			fCellWidth[kStatusCellCount];
+			bool			fReadOnly;
+};
+
+#endif  // STATUS_VIEW_H

src/apps/stylededit/StyledEditView.cpp

@@ -50,8 +50,8 @@ void
 StyledEditView::Select(int32 start, int32 finish)
 {
 	fMessenger->SendMessage(start == finish ? DISABLE_ITEMS : ENABLE_ITEMS);
-	fMessenger->SendMessage(UPDATE_LINE);
-	BTextView::Select(start, finish);	
+	BTextView::Select(start, finish);
+	_UpdateStatus();
 }
 
 
@@ -181,7 +181,7 @@ StyledEditView::DeleteText(int32 start, int32 finish)
 		fMessenger-> SendMessage(TEXT_CHANGED);
 
 	BTextView::DeleteText(start, finish);
-	fMessenger->SendMessage(UPDATE_LINE);
+	_UpdateStatus();
 }
 
 
@@ -193,7 +193,7 @@ StyledEditView::InsertText(const char* text, int32 length, int32 offset,
 		fMessenger->SendMessage(TEXT_CHANGED);
 
 	BTextView::InsertText(text, length, offset, runs);
-	fMessenger->SendMessage(UPDATE_LINE);
+	_UpdateStatus();
 }
 
 
@@ -209,5 +209,34 @@ StyledEditView::FrameResized(float width, float height)
 		textRect.InsetBy(TEXT_INSET, TEXT_INSET);
 		SetTextRect(textRect);
 	}
-}				
+}
+
+
+void
+StyledEditView::_UpdateStatus()
+{
+	int32 selStart, selFinish;
+	GetSelection(&selStart, &selFinish);
+
+	int32 line = CurrentLine();
+	int32 lineStart = OffsetAt(line);
+
+	int32 column = 1;
+	int32 tabSize = (int32)ceilf(TabWidth() / StringWidth("s"));
+	for (int i = lineStart; i < selStart; i++) {
+		unsigned char ch = ByteAt(i);
+		if ((ch & 0xC0) != 0x80) {
+			if (ch == '\t')
+				while (column % tabSize)
+					column++;
+			column++;
+		}
+	}
+
+	BMessage* message = new BMessage(UPDATE_STATUS);
+	message->AddInt32("line", line + 1);
+	message->AddInt32("column", column);
+	message->AddString("encoding", fEncoding.String());
+	fMessenger->SendMessage(message);
+}
 

src/apps/stylededit/StyledEditView.h

@@ -42,6 +42,8 @@ class StyledEditView : public BTextView {
 		uint32 		GetEncoding() const;
 
 	private:
+		void		_UpdateStatus();
+
 		BMessenger 	*fMessenger;
 		bool		fSuppressChanges;
 		BString		fEncoding;

src/apps/stylededit/StyledEditWindow.cpp

@@ -13,10 +13,11 @@
  */
 
 
-#include "Constants.h"
 #include "ColorMenuItem.h"
+#include "Constants.h"
 #include "FindWindow.h"
 #include "ReplaceWindow.h"
+#include "StatusView.h"
 #include "StyledEditApp.h"
 #include "StyledEditView.h"
 #include "StyledEditWindow.h"
@@ -514,6 +515,26 @@ StyledEditWindow::MessageReceived(BMessage* message)
 			}
 			break;
 
+		case UPDATE_STATUS:
+			message->AddBool("modified", !fClean);
+			message->AddBool("readOnly", !fTextView->IsEditable());
+			fStatusView->SetStatus(message);
+			break;
+
+		case UNLOCK_FILE:
+		{
+			status_t status = _UnlockFile();
+			if (status != B_OK) {
+				BString text;
+				bs_printf(&text,
+					B_TRANSLATE("Unable to unlock file\n\t%s"),
+					strerror(status));
+				_ShowAlert(text, B_TRANSLATE("OK"), "", "", B_STOP_ALERT);
+			}
+			PostMessage(UPDATE_STATUS);
+			break;
+		}
+
 		default:
 			BWindow::MessageReceived(message);
 			break;
@@ -1058,6 +1079,9 @@ StyledEditWindow::_InitWindow(uint32 encoding)
 	AddChild(fScrollView);
 	fTextView->MakeFocus(true);
 
+	fStatusView = new StatusView(fScrollView);
+	fScrollView->AddChild(fStatusView);
+
 	// Add "File"-menu:
 	BMenu* menu = new BMenu(B_TRANSLATE("File"));
 	fMenuBar->AddItem(menu);
@@ -1137,7 +1161,7 @@ StyledEditWindow::_InitWindow(uint32 encoding)
 
 	menu->AddItem(new BMenuItem(B_TRANSLATE("Find selection"),
 		new BMessage(MENU_FIND_SELECTION), 'H'));
-	menu->AddItem(new BMenuItem(B_TRANSLATE("Replace" B_UTF8_ELLIPSIS),
+	menu->AddItem(fReplaceItem = new BMenuItem(B_TRANSLATE("Replace" B_UTF8_ELLIPSIS),
 		new BMessage(MENU_REPLACE), 'R'));
 	menu->AddItem(fReplaceSameItem = new BMenuItem(B_TRANSLATE("Replace next"),
 		new BMessage(MENU_REPLACE_SAME), 'T'));
@@ -1369,6 +1393,14 @@ StyledEditWindow::_LoadFile(entry_ref* ref, const char* forceEncoding)
 		return status;
 	}
 
+	struct stat st;
+	if (file.InitCheck() == B_OK && file.GetStat(&st) == B_OK) {
+		bool editable = (getuid() == st.st_uid && S_IWUSR & st.st_mode)
+					|| (getgid() == st.st_gid && S_IWGRP & st.st_mode)
+					|| (S_IWOTH & st.st_mode);
+		_SetReadOnly(!editable);
+	}
+
 	// update alignment
 	switch (fTextView->Alignment()) {
 		case B_ALIGN_LEFT:
@@ -1480,6 +1512,50 @@ StyledEditWindow::_ReloadDocument(BMessage* message)
 }
 
 
+status_t
+StyledEditWindow::_UnlockFile()
+{
+	_NodeMonitorSuspender nodeMonitorSuspender(this);
+
+	if (!fSaveMessage)
+		return B_ERROR;
+
+	entry_ref dirRef;
+	const char* name;
+	if (fSaveMessage->FindRef("directory", &dirRef) != B_OK
+		|| fSaveMessage->FindString("name", &name) != B_OK)
+		return B_BAD_VALUE;
+
+	BDirectory dir(&dirRef);
+	BEntry entry(&dir, name);
+
+	status_t status = dir.InitCheck();
+	if (status != B_OK)
+		return status;
+	
+	status = entry.InitCheck();
+	if (status != B_OK)
+		return status;
+
+	struct stat st;
+	BFile file(&entry, B_READ_WRITE);
+	status = file.InitCheck();
+	if (status != B_OK)
+		return status;
+
+	status = file.GetStat(&st);
+	if (status != B_OK)
+		return status;
+	
+	st.st_mode |= S_IWUSR;
+	status = file.SetPermissions(st.st_mode);
+	if (status == B_OK)
+		_SetReadOnly(false);
+
+	return status;
+}
+
+
 bool
 StyledEditWindow::_Search(BString string, bool caseSensitive, bool wrap,
 	bool backSearch, bool scrollToOccurence)
@@ -1719,6 +1795,18 @@ StyledEditWindow::_ShowStatistics()
 }
 
 
+void
+StyledEditWindow::_SetReadOnly(bool readOnly)
+{
+	fReplaceItem->SetEnabled(!readOnly);
+	fReplaceSameItem->SetEnabled(!readOnly);
+	fFontMenu->SetEnabled(!readOnly);
+	fAlignLeft->Menu()->SetEnabled(!readOnly);
+	fWrapItem->SetEnabled(!readOnly);
+	fTextView->MakeEditable(!readOnly);
+}
+
+
 #undef B_TRANSLATION_CONTEXT
 #define B_TRANSLATION_CONTEXT "Menus"
 
@@ -1845,7 +1933,8 @@ StyledEditWindow::_HandleNodeMonitorEvent(BMessage *message)
 			{
 				int32 fields = 0;
 				if (message->FindInt32("fields", &fields) == B_OK
-					&& (fields & (B_STAT_SIZE | B_STAT_MODIFICATION_TIME)) == 0)
+					&& (fields & (B_STAT_SIZE | B_STAT_MODIFICATION_TIME
+							| B_STAT_MODE)) == 0)
 					break;
 
 				const char* name = NULL;

src/apps/stylededit/StyledEditWindow.h

@@ -12,10 +12,8 @@
 
 
 #include <Alert.h>
-#include <Window.h>
-#include <String.h>
-#include <Message.h>
 #include <Node.h>
+#include <Window.h>
 
 struct entry_ref;
 
@@ -25,6 +23,7 @@ class BMenuBar;
 class BMenuItem;
 class BMessage;
 class BScrollView;
+class StatusView;
 class StyledEditView;
 
 
@@ -58,6 +57,7 @@ private:
 			status_t			_LoadFile(entry_ref* ref,
 									const char* forceEncoding = NULL);
 			void				_ReloadDocument(BMessage *message);
+			status_t			_UnlockFile();
 			bool				_Search(BString searchFor, bool caseSensitive,
 									bool wrap, bool backSearch,
 									bool scrollToOccurence = true);
@@ -72,6 +72,7 @@ private:
 			void				_SetFontStyle(const char* fontFamily,
 									const char* fontStyle);
 			int32				_ShowStatistics();
+			void				_SetReadOnly(bool editable);
 			void				_UpdateCleanUndoRedoSaveRevert();
 			int32				_ShowAlert(const BString& text,
 									const BString& label, const BString& label2,
@@ -119,6 +120,7 @@ private:
 			BMenuItem*			fCopyItem;
 
 			BMenuItem*			fFindAgainItem;
+			BMenuItem*			fReplaceItem;
 			BMenuItem*			fReplaceSameItem;
 
 			BMenuItem*			fBlackItem;
@@ -160,6 +162,7 @@ private:
 
 			StyledEditView*		fTextView;
 			BScrollView*		fScrollView;
+			StatusView*			fStatusView;
 
 			BFilePanel*			fSavePanel;
 			BMenu*				fSavePanelEncodingMenu;