6 * Written by Keith Marshall <keithmarshall@users.sourceforge.net>
7 * Copyright (C) 2012, MinGW Project
10 * Implementation of the methods for the pkgListViewMaker class, and
11 * its AppWindowMaker client API, to support the display of the package
12 * list in the mingw-get graphical user interface.
15 * This is free software. Permission is granted to copy, modify and
16 * redistribute this software, under the provisions of the GNU General
17 * Public License, Version 3, (or, at your option, any later version),
18 * as published by the Free Software Foundation; see the file COPYING
19 * for licensing details.
21 * Note, in particular, that this software is provided "as is", in the
22 * hope that it may prove useful, but WITHOUT WARRANTY OF ANY KIND; not
23 * even an implied WARRANTY OF MERCHANTABILITY, nor of FITNESS FOR ANY
24 * PARTICULAR PURPOSE. Under no circumstances will the author, or the
25 * MinGW Project, accept liability for any damages, however caused,
26 * arising from the use of this software.
29 #define _WIN32_IE 0x0300
38 #include <wtkexcept.h>
40 void AppWindowMaker::InitPackageListView()
42 /* Create and initialise a ListView window, in which to present
45 PackageListView = CreateWindow( WC_LISTVIEW, NULL,
46 WS_VISIBLE | WS_BORDER | WS_CHILD | WS_EX_CLIENTEDGE |
47 LVS_REPORT | LVS_SINGLESEL | LVS_SHOWSELALWAYS, 0, 0, 0, 0,
48 AppWindow, (HMENU)(ID_PACKAGE_LISTVIEW),
51 /* ...and set its extended style attributes.
53 ListView_SetExtendedListViewStyle( PackageListView,
54 LVS_EX_GRIDLINES | LVS_EX_FULLROWSELECT | LVS_EX_ONECLICKACTIVATE
57 /* Propagate the default font, as set for the main window itself,
58 * to the list view control.
60 SendMessage( PackageListView, WM_SETFONT, (WPARAM)(DefaultFont), TRUE );
62 /* Assign an image list, to furnish the package status icons.
64 HIMAGELIST iconlist = ImageList_Create( 16, 16, ILC_COLOR32 | ILC_MASK, 13, 0 );
65 for( int index = 0; index <= PKGSTATE( PURGE ); index++ )
67 HICON image = LoadIcon( AppInstance, MAKEINTRESOURCE(ID_PKGSTATE(index)) );
68 if( ImageList_AddIcon( iconlist, image ) == -1 )
69 throw WTK::runtime_error( "Error loading package status icons" );
71 ListView_SetImageList( PackageListView, iconlist, LVSIL_SMALL );
73 /* Initialise the table layout, and assign column headings.
76 struct { int id; int width; char *text; } headings[] =
78 /* Specify the column headings for the package list table.
80 { ID_PKGLIST_TABLE_HEADINGS, 20, "" },
81 { ID_PKGNAME_COLUMN_HEADING, 150, "Package" },
82 { ID_PKGTYPE_COLUMN_HEADING, 48, "Class" },
83 { ID_INSTVER_COLUMN_HEADING, 125, "Installed Version" },
84 { ID_REPOVER_COLUMN_HEADING, 125, "Repository Version" },
85 { ID_PKGDESC_COLUMN_HEADING, 400, "Description" },
87 * This all-null entry terminates the sequence.
91 table.fmt = LVCFMT_LEFT;
92 table.mask = LVCF_FMT | LVCF_WIDTH | LVCF_TEXT | LVCF_SUBITEM;
93 for( int index = 0; headings[index].text != NULL; index++ )
95 /* Loop over the columns, setting the initial width
96 * (in pixels), and assigning the heading to each.
98 table.cx = headings[index].width;
99 table.pszText = headings[index].text;
100 ListView_InsertColumn( PackageListView, index, &table );
102 /* "Update" the package list, to initialise the list view.
107 void AppWindowMaker::UpdatePackageList()
109 /* Scan the XML package catalogue, adding a ListView item entry
110 * for each package record.
112 pkgListViewMaker PackageList( PackageListView );
113 pkgDirectory *dir = pkgData->CatalogueAllPackages();
114 dir->InOrder( &PackageList );
118 static char *pkgGetTitle( pkgXmlNode *pkg, const pkgXmlNode *xml_root )
120 /* A private helper method, to retrieve the title attribute
121 * associated with the description for the nominated package.
123 * Note: this should really return a const char *, but then
124 * we would need to cast it to non-const for mapping into the
125 * ill-formed structure of Microsoft's LVITEM, so we may just
126 * as well return the non-const result anyway.
128 pkgXmlNode *desc = pkg->FindFirstAssociate( description_key );
129 while( desc != NULL )
131 /* Handling it internally as the const which it should be...
134 if( (title = desc->GetPropVal( title_key, NULL )) != NULL )
136 * As soon as we find a description element with an
137 * assigned title attribute, immediately return it,
138 * (with the required cast to non-const).
140 return (char *)(title);
142 /* If we haven't yet found any title attribute, check for any
143 * further description elements at the current XML nesting level.
145 desc = desc->FindNextAssociate( description_key );
148 /* If we've exhausted all description elements at the current XML
149 * nesting level, without finding a title attribute, and we haven't
150 * checked all enclosing levels back to the document root...
152 if( pkg != xml_root )
154 * ...then continue the search in the immediately enclosing level.
156 return pkgGetTitle( pkg->GetParent(), xml_root );
158 /* If we get to here, then we've searched all levels back to the
159 * document root, and have failed to find any title attribute; we
160 * have nothing to return.
165 static inline char *pkgGetTitle( pkgXmlNode *pkg )
167 /* Overload the preceding function, to automatically generate
168 * the required reference to the XML document root.
170 return pkgGetTitle( pkg->GetParent(), pkg->GetDocumentRoot() );
174 char *version_string_copy( char *buf, const char *text, int fill = 0 )
176 /* Local helper function to construct a package version string
177 * from individual version specific elements of the tarname.
181 /* First, if a fill character is specified, copy it as the
182 * first character of the result; (we assume that we are
183 * appending to a previously constructed result, and that
184 * this is the field separator character).
186 if( fill != 0 ) *buf++ = fill;
188 /* Now, append "text" up to, and including its final NUL
189 * terminator; (note that we do NOT guard against buffer
190 * overrun, as we have complete control over the calling
191 * context, where we allocated a result buffer at least
192 * as long as the tarname string from which the composed
193 * version string is extracted, and the composed result
194 * can never exceed the original length of this).
196 do { if( (*buf = *text) != '\0' ) ++buf; } while( *text++ != '\0' );
198 /* Finally, we return a pointer to the terminating NUL of
199 * the result, so as to facilitate appending further text.
204 static char *pkgVersionString( char *buf, pkgSpecs *pkg )
206 /* Helper method to construct a fully qualified version string
207 * from the decomposed package tarname form in a pkgSpecs structure.
209 * We begin with the concatenation of package version and build ID
210 * fields, retrieved from the pkgSpecs representation...
212 char *update = version_string_copy( buf, pkg->GetPackageVersion() );
213 update = version_string_copy( update, pkg->GetPackageBuild(), '-' );
214 if( pkg->GetSubSystemVersion() != NULL )
216 /* ...then, we append the sub-system ID, if applicable...
218 update = version_string_copy( update, pkg->GetSubSystemName(), '-' );
219 update = version_string_copy( update, pkg->GetSubSystemVersion(), '-' );
220 update = version_string_copy( update, pkg->GetSubSystemBuild(), '-' );
222 /* ...and finally, we return a pointer to the buffer in which
223 * we constructed the fully qualified version string.
228 pkgListViewMaker::pkgListViewMaker( HWND pane ): ListView( pane )
230 /* Constructor: initialise the invariant parameters within the
231 * embedded W32API ListView control structure.
233 content.stateMask = 0;
234 content.mask = LVIF_PARAM | LVIF_IMAGE | LVIF_STATE;
235 content.iSubItem = 0;
239 EXTERN_C pkgXmlNode *pkgGetStatus( pkgXmlNode *pkg, pkgActionItem *avail )
241 /* Helper function to acquire release availability and installation
242 * status attributes for a specified package.
244 pkg = pkg->FindFirstAssociate( release_key );
247 /* Examine each available release specification for the nominated
248 * package; select the one which represents the latest (most recent)
251 avail->SelectIfMostRecentFit( pkg );
253 /* Also check for the presence of an installation record for each
254 * release; if found, mark it as the currently installed release;
255 * (we assign the "to-remove" attribute, but we don't action it).
257 if( pkg->GetInstallationRecord( pkg->GetPropVal( tarname_key, NULL )) != NULL )
258 avail->SelectPackage( pkg, to_remove );
260 /* Cycle, until all known releases have been examined.
262 pkg = pkg->FindNextAssociate( release_key );
264 /* Check the identification of any currently installed release; this
265 * will capture property data for any installed release which may have
266 * been subsequently withdrawn from distribution.
268 avail->ConfirmInstallationStatus();
270 /* Finally, return a pointer to the specification for the installed
271 * release, if any, of the package under consideration.
273 return avail->Selection( to_remove );
276 void pkgListViewMaker::InsertItem( pkgXmlNode *pkg, char *class_name )
278 /* Private method to add a single package record, as an individual
279 * row item, to the displayed list view table; begin by filling in
280 * the appropriate fields within the "content" structure...
284 content.lParam = (unsigned long)(pkg);
286 /* ...then delegate the actual entry construction to...
288 UpdateItem( class_name, true );
291 inline bool pkgListViewMaker::GetItem( void )
293 /* An inline helper method to load the content structure from the
294 * next available item, if any, in the package list view; returns
295 * true when content is successfully loaded, else returns false.
297 content.iItem++; return ListView_GetItem( ListView, &content );
300 void pkgListViewMaker::UpdateItem( char *class_name, bool new_entry )
302 /* Assign a temporary action item, through which we may identify
303 * the latest available, and currently installed (if any), version
304 * attributes for the package under consideration.
307 pkgXmlNode *package = (pkgXmlNode *)(content.lParam);
308 pkgXmlNode *installed = pkgGetStatus( package, &avail );
310 /* Decompose the package tarname identifier for the latest available
311 * release, into its individual package specification properties.
313 pkgSpecs latest( package = avail.Selection() );
315 /* Allocate a temporary working text buffer, in which to format
316 * package property values for display...
318 size_t len = strlen( package->GetPropVal( tarname_key, value_none ) );
319 if( installed != NULL )
321 /* ...ensuring that it is at least as large as the longer of the
322 * latest or installed release tarname.
324 size_t altlen = strlen( installed->GetPropVal( tarname_key, value_none ) );
325 if( altlen > len ) len = altlen;
329 /* Choose a suitable icon for representation of the installation
330 * status of the package under consideration...
332 if( installed != NULL )
334 /* ...noting that, when it is already installed...
336 pkgSpecs current( installed );
337 content.iImage = (latest > current)
338 ? /* ...and, when the latest available is NEWER than the
339 * installed version, then we choose the icon indicating
340 * an installed package with an available update...
342 PKGSTATE( INSTALLED_OLD )
344 : /* ...or, when the latest available is NOT NEWER than
345 * the installed version, then we choose the alternative
346 * icon, simply indicating an installed package...
348 PKGSTATE( INSTALLED_CURRENT );
350 /* ...and also, load the version identification string for
351 * the installed version into the working text buffer.
353 pkgVersionString( buf, ¤t );
356 { /* Alternatively, for any package which is not recorded as
357 * installed, choose the icon indicating an available, but
358 * not (yet) installed package...
360 content.iImage = PKGSTATE( AVAILABLE );
362 /* ...and mark the list view column entry, for the installed
368 /* When compiling a new list entry...
372 /* ...add the package identification record, as a new item...
374 ListView_InsertItem( ListView, &content );
376 * ...and fill in the text for the package name, class name,
377 * and package description columns...
379 ListView_SetItemText( ListView, content.iItem, 1, package_name );
380 ListView_SetItemText( ListView, content.iItem, 2, class_name );
381 ListView_SetItemText( ListView, content.iItem, 5, pkgGetTitle( package ) );
384 /* ...otherwise, this is simply a request to update an
385 * existing item, in place; do so. (Note that, in this
386 * case, we DO NOT touch the package name, class name,
387 * or package description column content).
389 ListView_SetItem( ListView, &content );
391 /* Always fill in the text, as established above, in the
392 * column which identifies the currently installed version,
393 * if any, or clear it if the package is not installed.
395 ListView_SetItemText( ListView, content.iItem, 3, buf );
397 /* Finally, fill in the text of the column which identifies
398 * the latest available version of the package.
400 ListView_SetItemText( ListView, content.iItem, 4, pkgVersionString( buf, &latest ) );
403 void pkgListViewMaker::Dispatch( pkgXmlNode *package )
405 /* Implementation of the "dispatcher" method, which is required
406 * by any derivative of the pkgDirectoryViewerEngine class, for
407 * dispatching the content of the directory to the display service,
408 * (which, in this case, populates the list view window pane).
410 if( package->IsElementOfType( package_key ) )
412 /* Assemble the package name into the list view record block.
414 package_name = (char *)(package->GetPropVal( name_key, value_unknown ));
416 /* When processing a pkgDirectory entry for a package entity,
417 * generate a sub-directory listing for any contained package
421 if( (dir = EnumerateComponents( package )) != NULL )
423 /* ...and recurse, to process any which are found...
425 dir->InOrder( this );
429 /* ...otherwise, simply insert an unclassified list entry
430 * for the bare package name, omitting the component class.
432 InsertItem( package, "" );
434 else if( package->IsElementOfType( component_key ) )
436 /* Handle the recursive calls for the component sub-directory,
437 * inheriting the package name entry from the original package
438 * entity, and emit an appropriately classified list view entry
439 * for each identified component package.
441 InsertItem( package, (char *)(package->GetPropVal( class_key, "" )) );
445 void pkgListViewMaker::MarkScheduledActions( pkgActionItem *schedule )
447 /* Method to reassign icons to entries within the package list view,
448 * indicating any which have been marked for installation, upgrade,
449 * or removal of the associated package.
451 if( schedule != NULL )
452 for( content.iItem = -1; GetItem(); )
454 /* Visiting every entry in the list...
457 if( (ref = schedule->GetReference( (pkgXmlNode *)(content.lParam) )) != NULL )
459 /* ...identify those which are associated with a scheduled action...
461 unsigned long opcode;
462 if( (opcode = ref->HasAttribute( ACTION_MASK )) == ACTION_INSTALL )
464 /* ...selecting the appropriate icon to mark those packages
465 * which have been scheduled for installation...
467 * FIXME: we should also consider that such packages
468 * may have been scheduled for reinstallation.
470 content.iImage = PKGSTATE( AVAILABLE_INSTALL );
472 else if( opcode == ACTION_UPGRADE )
474 /* ...those which have been scheduled for upgrade...
476 content.iImage = PKGSTATE( UPGRADE );
478 else if( opcode == ACTION_REMOVE )
480 /* ...and those which have been scheduled for removal.
482 content.iImage = PKGSTATE( REMOVE );
485 { /* Where a scheduled action is any other than those above,
486 * handle as if there was no scheduled action...
490 * ...and ensure that the list view entry reflects the
491 * normal display state for the associated package.
497 * Where an action mark is appropriate, ensure that it
498 * is applied to the list view entry.
500 ListView_SetItem( ListView, &content );
505 void pkgListViewMaker::UpdateListView( void )
507 /* A simple helper method, to refresh the content of the
508 * package list view, resetting each item to its initial
509 * unmarked display state.
511 for( content.iItem = -1; GetItem(); ) UpdateItem( NULL );
514 /* $RCSfile$: end of file */