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; const 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 = (char *)(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 );
117 /* Force a redraw of the application window, to ensure that the
118 * data pane content remains synchronised.
120 InvalidateRect( AppWindow, NULL, FALSE );
121 UpdateWindow( AppWindow );
124 inline bool pkgXmlNode::IsVisibleGroupMember()
126 /* Hook invoked before adding a package reference to the package list,
127 * to ensure that it represents a member of the current package group.
129 return AppWindowMaker::IsPackageGroupAffiliate( this );
132 inline bool pkgXmlNode::IsVisibleClass(){ return true; }
134 static char *pkgGetTitle( pkgXmlNode *pkg, const pkgXmlNode *xml_root )
136 /* A private helper method, to retrieve the title attribute
137 * associated with the description for the nominated package.
139 * Note: this should really return a const char *, but then
140 * we would need to cast it to non-const for mapping into the
141 * ill-formed structure of Microsoft's LVITEM, so we may just
142 * as well return the non-const result anyway.
144 pkgXmlNode *desc = pkg->FindFirstAssociate( description_key );
145 while( desc != NULL )
147 /* Handling it internally as the const which it should be...
150 if( (title = desc->GetPropVal( title_key, NULL )) != NULL )
152 * As soon as we find a description element with an
153 * assigned title attribute, immediately return it,
154 * (with the required cast to non-const).
156 return (char *)(title);
158 /* If we haven't yet found any title attribute, check for any
159 * further description elements at the current XML nesting level.
161 desc = desc->FindNextAssociate( description_key );
164 /* If we've exhausted all description elements at the current XML
165 * nesting level, without finding a title attribute, and we haven't
166 * checked all enclosing levels back to the document root...
168 if( pkg != xml_root )
170 * ...then continue the search in the immediately enclosing level.
172 return pkgGetTitle( pkg->GetParent(), xml_root );
174 /* If we get to here, then we've searched all levels back to the
175 * document root, and have failed to find any title attribute; we
176 * have nothing to return.
181 static inline char *pkgGetTitle( pkgXmlNode *pkg )
183 /* Overload the preceding function, to automatically generate
184 * the required reference to the XML document root.
186 return pkgGetTitle( pkg->GetParent(), pkg->GetDocumentRoot() );
190 char *version_string_copy( char *buf, const char *text, int fill = 0 )
192 /* Local helper function to construct a package version string
193 * from individual version specific elements of the tarname.
197 /* First, if a fill character is specified, copy it as the
198 * first character of the result; (we assume that we are
199 * appending to a previously constructed result, and that
200 * this is the field separator character).
202 if( fill != 0 ) *buf++ = fill;
204 /* Now, append "text" up to, and including its final NUL
205 * terminator; (note that we do NOT guard against buffer
206 * overrun, as we have complete control over the calling
207 * context, where we allocated a result buffer at least
208 * as long as the tarname string from which the composed
209 * version string is extracted, and the composed result
210 * can never exceed the original length of this).
212 do { if( (*buf = *text) != '\0' ) ++buf; } while( *text++ != '\0' );
214 /* Finally, we return a pointer to the terminating NUL of
215 * the result, so as to facilitate appending further text.
220 static char *pkgVersionString( char *buf, pkgSpecs *pkg )
222 /* Helper method to construct a fully qualified version string
223 * from the decomposed package tarname form in a pkgSpecs structure.
225 * We begin with the concatenation of package version and build ID
226 * fields, retrieved from the pkgSpecs representation...
228 const char *pkg_version_tag;
229 char *update = version_string_copy( buf, pkg->GetPackageVersion() );
230 update = version_string_copy( update, pkg->GetPackageBuild(), '-' );
231 if( (pkg_version_tag = pkg->GetSubSystemVersion()) != NULL )
233 /* ...then, we append the sub-system ID, if applicable.
235 update = version_string_copy( update, pkg->GetSubSystemName(), '-' );
236 update = version_string_copy( update, pkg_version_tag, '-' );
237 update = version_string_copy( update, pkg->GetSubSystemBuild(), '-' );
239 if( (pkg_version_tag = pkg->GetReleaseStatus()) != NULL )
241 /* When the package name also includes a release classification,
242 * then we also append this to the displayed version number (noting
243 * that an initial '$' is special, and should be suppressed)...
245 if( *pkg_version_tag == '$' ) ++pkg_version_tag;
246 update = version_string_copy( update, pkg_version_tag, '-' );
248 * ...followed by any serialisation index for the release...
250 update = version_string_copy( update, pkg->GetReleaseIndex(), '-' );
252 /* ...and finally, we return a pointer to the buffer in which
253 * we constructed the fully qualified version string.
258 pkgListViewMaker::pkgListViewMaker( HWND pane ): ListView( pane )
260 /* Constructor: initialise the invariant parameters within the
261 * embedded W32API ListView control structure.
263 content.stateMask = 0;
264 content.mask = LVIF_PARAM | LVIF_IMAGE | LVIF_STATE;
265 content.iSubItem = 0;
269 EXTERN_C pkgXmlNode *pkgGetStatus( pkgXmlNode *pkg, pkgActionItem *avail )
271 /* Helper function to acquire release availability and installation
272 * status attributes for a specified package.
274 pkg = pkg->FindFirstAssociate( release_key );
277 /* Examine each available release specification for the nominated
278 * package; select the one which represents the latest (most recent)
281 avail->SelectIfMostRecentFit( pkg );
283 /* Also check for the presence of an installation record for each
284 * release; if found, mark it as the currently installed release;
285 * (we assign the "to-remove" attribute, but we don't action it).
287 if( pkg->GetInstallationRecord( pkg->GetPropVal( tarname_key, NULL )) != NULL )
288 avail->SelectPackage( pkg, to_remove );
290 /* Cycle, until all known releases have been examined.
292 pkg = pkg->FindNextAssociate( release_key );
294 /* Check the identification of any currently installed release; this
295 * will capture property data for any installed release which may have
296 * been subsequently withdrawn from distribution.
298 avail->ConfirmInstallationStatus();
300 /* Finally, return a pointer to the specification for the installed
301 * release, if any, of the package under consideration.
303 return avail->Selection( to_remove );
306 void pkgListViewMaker::InsertItem( pkgXmlNode *pkg, char *class_name )
308 /* Private method to add a single package record, as an individual
309 * row item, to the displayed list view table; begin by filling in
310 * the appropriate fields within the "content" structure...
314 content.lParam = (unsigned long)(pkg);
316 /* ...then delegate the actual entry construction to...
318 UpdateItem( class_name, true );
321 inline bool pkgListViewMaker::GetItem( void )
323 /* An inline helper method to load the content structure from the
324 * next available item, if any, in the package list view; returns
325 * true when content is successfully loaded, else returns false.
327 content.iItem++; return ListView_GetItem( ListView, &content );
330 void pkgListViewMaker::UpdateItem( char *class_name, bool new_entry )
332 /* Assign a temporary action item, through which we may identify
333 * the latest available, and currently installed (if any), version
334 * attributes for the package under consideration.
337 pkgXmlNode *package = (pkgXmlNode *)(content.lParam);
338 pkgXmlNode *installed = pkgGetStatus( package, &avail );
340 /* Decompose the package tarname identifier for the latest available
341 * release, into its individual package specification properties.
343 pkgSpecs latest( package = avail.Selection() );
345 /* Allocate a temporary working text buffer, in which to format
346 * package property values for display...
348 size_t len = strlen( package->GetPropVal( tarname_key, value_none ) );
349 if( installed != NULL )
351 /* ...ensuring that it is at least as large as the longer of the
352 * latest or installed release tarname.
354 size_t altlen = strlen( installed->GetPropVal( tarname_key, value_none ) );
355 if( altlen > len ) len = altlen;
359 /* Choose a suitable icon for representation of the installation
360 * status of the package under consideration...
362 if( installed != NULL )
364 /* ...noting that, when it is already installed...
366 pkgSpecs current( installed );
367 content.iImage = (latest > current)
368 ? /* ...and, when the latest available is NEWER than the
369 * installed version, then we choose the icon indicating
370 * an installed package with an available update...
372 PKGSTATE( INSTALLED_OLD )
374 : /* ...or, when the latest available is NOT NEWER than
375 * the installed version, then we choose the alternative
376 * icon, simply indicating an installed package...
378 PKGSTATE( INSTALLED_CURRENT );
380 /* ...and also, load the version identification string for
381 * the installed version into the working text buffer.
383 pkgVersionString( buf, ¤t );
386 { /* Alternatively, for any package which is not recorded as
387 * installed, choose the icon indicating an available, but
388 * not (yet) installed package...
390 content.iImage = PKGSTATE( AVAILABLE );
392 /* ...and mark the list view column entry, for the installed
398 /* When compiling a new list entry...
402 /* ...add the package identification record, as a new item...
404 ListView_InsertItem( ListView, &content );
406 * ...and fill in the text for the package name, class name,
407 * and package description columns...
409 ListView_SetItemText( ListView, content.iItem, 1, package_name );
410 ListView_SetItemText( ListView, content.iItem, 2, class_name );
411 ListView_SetItemText( ListView, content.iItem, 5, pkgGetTitle( package ) );
414 /* ...otherwise, this is simply a request to update an
415 * existing item, in place; do so. (Note that, in this
416 * case, we DO NOT touch the package name, class name,
417 * or package description column content).
419 ListView_SetItem( ListView, &content );
421 /* Always fill in the text, as established above, in the
422 * column which identifies the currently installed version,
423 * if any, or clear it if the package is not installed.
425 ListView_SetItemText( ListView, content.iItem, 3, buf );
427 /* Finally, fill in the text of the column which identifies
428 * the latest available version of the package.
430 ListView_SetItemText( ListView, content.iItem, 4, pkgVersionString( buf, &latest ) );
433 void pkgListViewMaker::Dispatch( pkgXmlNode *package )
435 /* Implementation of the "dispatcher" method, which is required
436 * by any derivative of the pkgDirectoryViewerEngine class, for
437 * dispatching the content of the directory to the display service,
438 * (which, in this case, populates the list view window pane).
440 if( package->IsElementOfType( package_key ) && package->IsVisibleGroupMember() )
442 /* Assemble the package name into the list view record block.
444 package_name = (char *)(package->GetPropVal( name_key, value_unknown ));
446 /* When processing a pkgDirectory entry for a package entity,
447 * generate a sub-directory listing for any contained package
451 if( (dir = EnumerateComponents( package )) != NULL )
453 /* ...and recurse, to process any which are found...
455 dir->InOrder( this );
459 /* ...otherwise, simply insert an unclassified list entry
460 * for the bare package name, omitting the component class.
462 InsertItem( package, (char *)("") );
464 else if( package->IsElementOfType( component_key ) && package->IsVisibleClass() )
466 /* Handle the recursive calls for the component sub-directory,
467 * inheriting the package name entry from the original package
468 * entity, and emit an appropriately classified list view entry
469 * for each identified component package.
471 InsertItem( package, (char *)(package->GetPropVal( class_key, "" )) );
475 void pkgListViewMaker::MarkScheduledActions( pkgActionItem *schedule )
477 /* Method to reassign icons to entries within the package list view,
478 * indicating any which have been marked for installation, upgrade,
479 * or removal of the associated package.
481 if( schedule != NULL )
482 for( content.iItem = -1; GetItem(); )
484 /* Visiting every entry in the list...
487 if( (ref = schedule->GetReference( (pkgXmlNode *)(content.lParam) )) != NULL )
489 /* ...identify those which are associated with a scheduled action...
491 unsigned long opcode;
492 if( (opcode = ref->HasAttribute( ACTION_MASK )) == ACTION_INSTALL )
494 /* ...selecting the appropriate icon to mark those packages
495 * which have been scheduled for installation...
497 * FIXME: we should also consider that such packages
498 * may have been scheduled for reinstallation.
500 content.iImage = PKGSTATE( AVAILABLE_INSTALL );
502 else if( opcode == ACTION_UPGRADE )
504 /* ...those which have been scheduled for upgrade...
506 content.iImage = PKGSTATE( UPGRADE );
508 else if( opcode == ACTION_REMOVE )
510 /* ...and those which have been scheduled for removal.
512 content.iImage = PKGSTATE( REMOVE );
515 { /* Where a scheduled action is any other than those above,
516 * handle as if there was no scheduled action...
520 * ...and ensure that the list view entry reflects the
521 * normal display state for the associated package.
527 * Where an action mark is appropriate, ensure that it
528 * is applied to the list view entry.
530 ListView_SetItem( ListView, &content );
535 void pkgListViewMaker::UpdateListView( void )
537 /* A simple helper method, to refresh the content of the
538 * package list view, resetting each item to its initial
539 * unmarked display state.
541 for( content.iItem = -1; GetItem(); ) UpdateItem( NULL );
544 /* $RCSfile$: end of file */