ede/efiler/EDE_FileView.h
Vedran Ljubovic 817e0cd918 Fixes to dnd. Summary:
- Konqueror: dnd works, classic copypaste konq->efiler works, efiler->konq 
wants to create a text file
- Nautilus: dnd works both ways, copy/paste buffer is incompatible (neither 
side sees anything in the buffer)
- Rox-filer: dnd works both ways, rox apparently has no copy/paste buffer
2007-08-03 20:18:09 +00:00

557 lines
16 KiB
C++

/*
* $Id$
*
* EDE FileView class
* Part of edelib.
* Copyright (c) 2005-2007 EDE Authors.
*
* This program is licenced under terms of the
* GNU General Public Licence version 2 or newer.
* See COPYING for details.
*/
#ifndef EDE_FileView_H
#define EDE_FileView_H
#include <Fl/Fl_Shared_Image.H>
#include <Fl/Fl_Input.H>
#include <edelib/String.h>
#include <edelib/IconTheme.h>
#include "EDE_Browser.h"
// This class provides the generic FileView class and two
// derived classes called FileIconView and FileDetailsView.
// These classes are interchangeable, so that application
// can just declare FileView* and use.
// FileView is populated with FileItem's.
struct FileItem {
edelib::String name; // just the name
edelib::String icon;
edelib::String size;
edelib::String realpath; // whatever the caller uses to access the file
edelib::String description;
edelib::String date;
edelib::String permissions;
};
// Type for rename_callback
// I don't know how to do this without creating a new type :(
typedef void (rename_callback_type)(const char*);
typedef void (paste_callback_type)(const char*);
class FileDetailsView_ : public EDE_Browser {
private:
// EDE_Browser* browser; - yada
// internal list of items
/* struct myfileitem {
struct FileItem *item;
myfileitem* previous;
myfileitem* next;
} *firstitem;*/
int findrow(edelib::String realpath) {
for (int i=1; i<=size(); i++) {
char *tmp = (char*)data(i);
if (realpath==tmp) return i;
}
return 0;
}
rename_callback_type* rename_callback_;
paste_callback_type* paste_callback_;
Fl_Callback* context_callback_;
// Subclass Fl_Input so we can handle keyboard
class EditBox : public Fl_Input {
friend class FileDetailsView;
public:
EditBox(int x, int y, int w, int h, const char* label = 0) : Fl_Input(x,y,w,h,label) {}
int handle (int e) {
FileDetailsView_* view = (FileDetailsView_*)parent();
if (e==FL_KEYBOARD && visible()) {
int k = Fl::event_key();
if (Fl::event_key()==FL_Enter && visible()) {
view->hide_editbox();
view->do_rename();
} else if (k==FL_Up || k==FL_Down || k==FL_Page_Up || k==FL_Page_Down) {
view->hide_editbox();
return 0; // let the view scroll
} else if (k==FL_F+2 || k==FL_Escape)
view->hide_editbox();
else
Fl_Input::handle(e);
return 1; // don't send keys to view
}
if (e==FL_MOUSEWHEEL && visible()) view->hide_editbox();
return Fl_Input::handle(e);
}
}* editbox_;
int editbox_row;
// show editbox at specified row and make the row "invisible" (bgcolor same as fgcolor)
void show_editbox(int row) {
if (!rename_callback_) return;
if (row<1 || row>size()) return; // nothing selected
if (text(row)[0]=='.' && text(row)[1]=='.' && text(row)[2]==column_char()) return; // can't rename "go up" button
// unselect the row with focus - it's prettier that way
select(row,0);
// Copy filename to editbox
char* filename = strdup(text(row));
char* tmp = strchr(filename, column_char());
if (tmp) *tmp='\0';
editbox_->value(filename);
bucket.add(filename);
// make the row "invisible"
editbox_row=row;
char* ntext = (char*)malloc(sizeof(char)*(strlen(text(row))+8)); // add 7 places for format chars
strncpy(ntext+7, text(row), strlen(text(row)));
strncpy(ntext, "@C255@.", 7);
ntext[strlen(text(row))+7]='\0';
text(row,ntext);
bucket.add(ntext);
// calculate location for editbox
// "Magic constants" here are just nice spacing
int X=x()+get_icon(row)->w()+8;
int W=150; // reasonable
int H=get_icon(row)->h()+2;
int Y=y()+2 - position();
void* item = item_first();
for (int i=1; i<row; i++) {
Y+=item_height(item);
item=item_next(item);
}
editbox_->resize(X,Y,W,H);
editbox_->show();
editbox_->take_focus();
editbox_->redraw();
}
void hide_editbox() {
fprintf(stderr, "hide_editbox()\n");
editbox_->hide();
// Make the edited row visible again
char* ntext = (char*)malloc(sizeof(char)*(strlen(text(editbox_row))-6)); // remove 7 places for format chars
strncpy(ntext, text(editbox_row)+7, strlen(text(editbox_row))-7);
ntext[strlen(text(editbox_row))-7]='\0';
text(editbox_row,ntext);
bucket.add(ntext);
}
// Do the rename
void do_rename() {
fprintf(stderr, "editbox_cb()\n");
rename_callback_(editbox_->value());
//hide_editbox();
}
// Bucket class is used to prevent memleaks
// It stores pointers to allocated memory that will be cleaned up later
// Just remember to call empty() when needed - everything else is automatic :)
class Bucket {
void** items;
int size, capacity;
public:
Bucket() : size(0), capacity(1000) {
items = (void**)malloc(sizeof(void*)*capacity);
for (int i=0; i<capacity; i++) items[i]=0;
}
~Bucket() { empty(); free(items); }
void add(void* p) {
if (size>=capacity) {
capacity+=1000;
items = (void**)realloc(items,sizeof(void*)*capacity);
for (int i=capacity-1000; i<capacity; i++)
items[i]=0;
}
items[size++]=p;
}
void empty() {
for (int i=0; i<size; i++) {
if (items[i]) free(items[i]);
items[i]=0;
}
size=0;
}
void debug() {
fprintf(stderr, "Bucket size %d, capacity %d\n", size, capacity);
}
} bucket;
public:
FileDetailsView_(int X, int Y, int W, int H, char*label=0) : EDE_Browser(X,Y,W,H,label) {
// browser = new EDE_Browser(X,Y,W,H,label);
// browser->end();
// end();
// resizable(browser->the_scroll());
// resizable(browser->the_group());
// resizable(browser);
const int cw[]={250,200,70,130,100,0};
column_widths(cw);
column_char('\t');
column_header("Name\tType\tSize\tDate\tPermissions");
const SortType st[]={ALPHA_CASE_SORT, ALPHA_CASE_SORT, FILE_SIZE_SORT, DATE_SORT, ALPHA_SORT, NO_SORT};
column_sort_types(st);
when(FL_WHEN_ENTER_KEY_ALWAYS);
//when(FL_WHEN_ENTER_KEY_CHANGED);
//first=0;
editbox_ = new EditBox(0, 0, 0, 0);
editbox_->box(FL_BORDER_BOX);
editbox_->parent(this);
editbox_->hide();
rename_callback_ = 0;
paste_callback_ = 0;
context_callback_ = 0;
}
// ~FileDetailsView() { delete browser; }
void insert(int row, FileItem *item) {
// Construct browser line
edelib::String value;
value = item->name+"\t"+item->description+"\t"+item->size+"\t"+item->date+"\t"+item->permissions;
char* realpath = strdup(item->realpath.c_str());
EDE_Browser::insert(row, value.c_str(), realpath); // put realpath into data
bucket.add(realpath);
fprintf (stderr, "value: %s\n", value.c_str());
// Get icon
edelib::String icon = edelib::IconTheme::get(item->icon.c_str(),edelib::ICON_SIZE_TINY);
if (icon=="") icon = edelib::IconTheme::get("misc",edelib::ICON_SIZE_TINY,edelib::ICON_CONTEXT_MIMETYPE);
set_icon(row, Fl_Shared_Image::get(icon.c_str()));
}
void add(FileItem *item) { insert(size()+1, item); }
void remove(FileItem *item) {
int row = findrow(item->realpath);
if (row) EDE_Browser::remove(row);
}
void remove(int row) { EDE_Browser::remove(row); } // why???
void update(FileItem *item) {
int row=findrow(item->realpath);
if (row==0) return;
//EDE_Browser::remove(row);
//insert(row, item);
// this was reimplemented because a) it's unoptimized, b) adds everything at the end,
// c) causes browser to lose focus, making it impossible to click on something while
// directory is loading
edelib::String value;
value = item->name+"\t"+item->description+"\t"+item->size+"\t"+item->date+"\t"+item->permissions;
char* realpath = strdup(item->realpath.c_str());
text(row, value.c_str());
data(row, realpath);
bucket.add(realpath);
fprintf (stderr, "value: %s\n", value.c_str());
// Get icon
edelib::String icon = edelib::IconTheme::get(item->icon.c_str(),edelib::ICON_SIZE_TINY);
if (icon=="") icon = edelib::IconTheme::get("misc",edelib::ICON_SIZE_TINY,edelib::ICON_CONTEXT_MIMETYPE);
set_icon(row, Fl_Shared_Image::get(icon.c_str()));
}
// This is needed because update() uses path to find item in list
void update_path(const char* oldpath,const char* newpath) {
int row=findrow(oldpath);
if (row==0) return;
char* c = strdup(newpath);
data(row,c);
bucket.add(c);
}
// Change color of row to gray
void gray(int row) {
if (text(row)[0] == '@' && text(row)[1] == 'C') return; // already greyed
char *ntext = (char*)malloc(sizeof(char)*(strlen(text(row))+7)); // add 6 places for format chars
strncpy(ntext+6, text(row), strlen(text(row)));
strncpy(ntext, "@C25@.", 6);
ntext[strlen(text(row))+6]='\0';
text(row,ntext);
bucket.add(ntext);
// grey icon - but how to ungray?
Fl_Image* im = get_icon(row)->copy();
im->inactive();
set_icon(row,im);
}
void ungray(int row) {
if (text(row)[0] != '@' || text(row)[1] != 'C') return; // not greyed
char *ntext = (char*)malloc(sizeof(char)*(strlen(text(row))-5)); // remove 6 places for format chars
strncpy(ntext, text(row)+6, strlen(text(row))-6);
ntext[strlen(text(row))-6]='\0';
text(row,ntext);
bucket.add(ntext);
// doesn't work
//Fl_Image* im = get_icon(row);
//im->uncache(); // doesn't work
//redraw(); // OPTIMIZE
}
// Overloaded handle for file renaming and dnd support
int handle(int e) {
// Right click
//fprintf(stderr, "Event: %d\n", e);
if (e==FL_RELEASE && Fl::event_button()==3) {
void* item = item_first();
int itemy=y()-position();
int i;
for (i=1; i<=size(); i++) {
itemy+=item_height(item);
if (itemy>Fl::event_y()) break;
}
set_focus(i);
Fl::event_is_click(0); // prevent doubleclicking with right button
if (context_callback_) context_callback_(this, data(i));
return 1;
}
// if (e==FL_RELEASE && Fl::event_button()==3) { return 1; }
/* ------------------------------
Rename support
--------------------------------- */
// fprintf (stderr, "Event: %d\n", e);
/* if (e==FL_KEYBOARD) {
if (Fl::event_key()==FL_F+2) {
if (editbox_->visible())
hide_editbox();
else
show_editbox(get_focus());
}
}*/
if (e==FL_PUSH && editbox_->visible() && !Fl::event_inside(editbox_))
hide_editbox(); // hide editbox when user clicks outside of it
if (e==FL_MOUSEWHEEL && editbox_->visible())
hide_editbox(); // hide editbox when scrolling mouse
// Click once on item that is already selected AND focused to rename it
static bool renaming=false;
if (e==FL_PUSH) renaming=false;
if (e==FL_PUSH && !editbox_->visible() && Fl::event_clicks()==0 && Fl::event_button()==1) {
const int* l = column_widths();
if (Fl::event_x()<x() || Fl::event_x()>x()+l[0])
return Fl_Icon_Browser::handle(e); // we're only interested in first column
// Is clicked item also focused?
void* item = item_first();
int focusy=y()-position();
for (int i=1; i<get_focus(); i++) {
focusy+=item_height(item);
if (focusy>Fl::event_y()) break;
item=item_next(item);
}
if (Fl::event_y()<focusy || Fl::event_y()>focusy+item_height(item))
return Fl_Icon_Browser::handle(e); // It isn't
if (selected(get_focus())!=1)
return Fl_Icon_Browser::handle(e); // If it isn't selected, then this action is select
renaming=true; // On next event, we will check if it's doubleclick
}
if (renaming && (e==FL_DRAG || e==FL_RELEASE || e==FL_MOVE) && Fl::event_is_click()==0) {
// Fl::event_is_click() will be >0 on doubleclick
show_editbox(get_focus());
renaming=false;
return 1; // don't pass mouse event, otherwise item will become reselected which is a bit ugly
}
/* ------------------------------
Drag&drop support
--------------------------------- */
// If paste_callback_ isn't set, that means we don't support dnd
if (paste_callback_==0) return EDE_Browser::handle(e);
// Let the window manager know that we accept dnd
if (e==FL_DND_ENTER||e==FL_DND_DRAG) return 1;
// Scroll the view by dragging to border (only works on heading... :( )
if (e==FL_DND_LEAVE) {
if (Fl::event_y()<y())
position(position()-1);
if (Fl::event_y()>y()+h())
position(position()+1);
return 1;
}
// Don't unselect items on FL_PUSH cause that could be dragging
if (e==FL_PUSH && Fl::event_clicks()!=1) return 1;
static int dragx,dragy;
if (e==FL_DRAG) {
edelib::String selected_items;
for (int i=1; i<=size(); i++)
if (selected(i)==1) {
// if (selected_items != "") selected_items += "\r\n";
selected_items += "file://";
selected_items += (char*)data(i);
selected_items += "\r\n";
}
Fl::copy(selected_items.c_str(),selected_items.length(),0);
Fl::dnd();
dragx = Fl::event_x(); dragy = Fl::event_y();
return 1; // don't do the multiple selection thing from Fl_Browser
}
static bool dndrelease=false;
if (e==FL_DND_RELEASE) {
if (Fl::event_y()<y() || Fl::event_y()>y()+h()) return 1;
// ^^ this can be a source of crashes in Fl::dnd()
fprintf(stderr, "FL_DND_RELEASE '%s'\n", Fl::event_text());
// Sometimes drag is accidental
if (abs(Fl::event_x()-dragx)>10 || abs(Fl::event_y()-dragy)>10) {
dndrelease=true;
Fl::paste(*this,0);
}
return 1;
}
if (e==FL_PASTE) {
fprintf(stderr, "FL_PASTE\n");
if (!Fl::event_text() || !Fl::event_length()) return 1;
fprintf(stderr, "1 '%s' (%d)\n",Fl::event_text(),Fl::event_length());
// Paste comes from menu/keyboard
if (!dndrelease) {
paste_callback_(0);
return 1;
}
dndrelease=false;
// Where is the user dropping?
// If it's not the first column, we assume the current directory
const int* l = column_widths();
if (Fl::event_x()<x() || Fl::event_x()>x()+l[0]) {
paste_callback_(0);
return 1;
}
// Find item where stuff is dropped
void* item = item_first();
int itemy=y()-position();
int i;
for (i=1; i<=size(); i++) {
itemy+=item_height(item);
if (itemy>Fl::event_y()) break;
}
paste_callback_((const char*)data(i));
return 1; // Fl_Browser doesn't know about paste so don't bother it
}
return EDE_Browser::handle(e);
}
// Setup callback that will be used when renaming and dnd
void rename_callback(rename_callback_type* cb) { rename_callback_ = cb; }
void paste_callback(paste_callback_type* cb) { paste_callback_ = cb; }
void context_callback(Fl_Callback* cb) { context_callback_ = cb; }
// Avoid memory leak
void clear() {
fprintf(stderr, "Call FileView::clear()\n");
bucket.empty();
EDE_Browser::clear();
}
};
class FileView : public Fl_Group {
public:
FileView(int X, int Y, int W, int H, char*label=0) : Fl_Group(X,Y,W,H,label) {}
void insert(int row, FileItem *item);
void add(FileItem *item);
void remove(FileItem *item);
void update(FileItem *item);
void update_path(const char* oldpath,const char* newpath);
void gray(int row);
void ungray(int row);
void rename_callback(rename_callback_type* cb);
void paste_callback(paste_callback_type* cb);
};
class FileDetailsView : public FileView {
private:
FileDetailsView_ *browser;
public:
FileDetailsView(int X, int Y, int W, int H, char*label=0) : FileView(X,Y,W,H,label) {
browser = new FileDetailsView_(X,Y,W,H,label);
browser->end();
end();
}
// ~FileDetailsView() { delete browser; }
void insert(int row, FileItem *item) { browser->insert(row,item); }
void add(FileItem *item) { browser->add(item); }
void remove(FileItem *item) { browser->remove(item); }
void update(FileItem *item) { browser->update(item); }
void update_path(const char* oldpath,const char* newpath) { browser->update_path(oldpath,newpath); }
void gray(int row) { browser->gray(row); }
void ungray(int row) { browser->ungray(row); }
void rename_callback(rename_callback_type* cb) { browser->rename_callback(cb); }
void paste_callback(paste_callback_type* cb) { browser->paste_callback(cb); }
void context_callback(Fl_Callback* cb) { browser->context_callback(cb); }
// Browser methods
const char* path(int i) { return (const char*)browser->data(i); }
int size() { return browser->size(); }
int selected(int i) { return browser->selected(i); }
void select(int i, int k) { browser->select(i,k); browser->middleline(i); }
int get_focus() { return browser->get_focus(); }
void set_focus(int i) { browser->set_focus(i); }
void remove(int i) { browser->remove(i); }
void clear() { browser->clear(); }
void callback(Fl_Callback*cb) { browser->callback(cb); }
// These methods are used by do_rename
const char* text(int i) { return browser->text(i); }
void text(int i, const char* c) { return browser->text(i,c); }
uchar column_char() { return browser->column_char(); }
};
#endif
/* $Id */