toolkit: comparison ui/win32/list.c

-:7d3dd5aacfda
+:d9018dcd4e2d
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
+#include <stdio.h>
+#include <stdlib.h>
+#include <cx/array_list.h>
 #include "list.h"
 #include "container.h"
 static void* null_getvalue(UiList *list, void *elm, int row, int col, void *userdata, UiBool *freeResult) {
 return NULL;
 }
+/*
+* Creates an UiListView widget object and initializes it from the UiListArgs
+*/
 static UiListView* create_listview_widget(UiObject *obj, HWND hwnd, UiListArgs *args, UiBool table) {
 UiListView *listview = w32_widget_create(&listview_widget_class, hwnd, sizeof(UiListView));
 listview->widget.hwnd = hwnd;
-listview->preferred_width = args->width ? args->width : 300;
+listview->obj = obj;
+listview->preferred_width = args->width ? args->width : 300; // 300: default width/height
 listview->preferred_height = args->height ? args->height : 300;
 listview->onactivate = args->onactivate;
 listview->onactivatedata = args->onactivatedata;
 listview->onselection = args->onselection;
 listview->onselectiondata = args->onselectiondata;
 listview->ondragcompletedata = args->ondragcompletedata;
 listview->ondrop = args->ondrop;
 listview->ondropdata = args->ondropdata;
 listview->istable = table;
+// convert ui_getvaluefunc into ui_getvaluefunc2 if necessary
 ui_getvaluefunc2 getvalue = args->getvalue2;
 void *getvaluedata = args->getvalue2data;
 if(!getvalue) {
 if(args->getvalue) {
 getvalue = getvalue_wrapper;
 parent,
 (HMENU)1337,
 hInstance,
 NULL);
 ui_win32_set_ui_font(hwnd);
 ListView_SetExtendedListViewStyle(
 hwnd,
 LVS_EX_FULLROWSELECT //| LVS_EX_GRIDLINES
 );
 UiListView *listview = create_listview_widget(obj, hwnd, args, table);
 ui_container_add(container, (W32Widget*)listview, &layout);
-// model
+// init list model
+// always initialize listview->model
 int numcolumns = 0;
 if (table) {
 if (args->model) {
 listview->model = ui_model_copy(obj->ctx, args->model);
 numcolumns = listview->model->columns;
 ui_model_add_column(obj->ctx, model, UI_STRING, "Test", -1);
 listview->model = model;
 numcolumns = 1;
 }
+// create columns
 UiModel *model = listview->model;
 for (int i=0;i<numcolumns;i++) {
 LVCOLUMN col;
 UiModelType type = model->types[i];
 char *title = model->titles[i];
 }
 }
 ListView_InsertColumn(hwnd, i, &col);
 }
+// bind the listview to the provided UiList
 if (listview->var) {
 UiList *list = listview->var->value;
 list->obj = listview;
 list->update = ui_listview_update;
 list->getselection = ui_listview_getselection;
 }
 return (W32Widget*)listview;
 }
+static UiListSelection listview_get_selection(UiListView *listview) {
+UiListSelection sel = { 0, NULL };
+HWND hwnd = listview->widget.hwnd;
+CX_ARRAY_DECLARE(int, indices);
+cx_array_initialize(indices, 8);
+int index = -1;
+while ((index = ListView_GetNextItem(hwnd, index, LVNI_SELECTED)) != -1) {
+cx_array_simple_add(indices, index);
+}
+if (indices_size > 0) {
+sel.rows = indices;
+sel.count = indices_size;
+}
+return sel;
+}
+// listview class event proc
 void ui_listview_eventproc(W32Widget *widget, HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam) {
+UiListView *listview = (UiListView*)widget;
+switch (uMsg) {
+case WM_NOTIFY: {
+LPNMHDR hdr = (LPNMHDR)lParam;
+switch (hdr->code) {
+case LVN_ITEMCHANGED: {
+LPNMLISTVIEW lv = (LPNMLISTVIEW)lParam;
+int row = lv->iItem;
+if ((lv->uChanged & LVIF_STATE) && (lv->uNewState & LVIS_SELECTED) && listview->onselection) {
+UiListSelection sel = listview_get_selection(listview);
+UiEvent event;
+event.obj = listview->obj;
+event.window = listview->obj->window;
+event.document = listview->obj->ctx->document;
+event.eventdata = &sel;
+event.eventdatatype = UI_EVENT_DATA_LIST_SELECTION;
+event.intval = row;
+event.set = ui_get_setop();
+listview->onselection(&event, listview->onselectiondata);
+ui_listselection_free(sel);
+}
+break;
+}
+case LVN_ITEMACTIVATE: {
+LPNMLISTVIEW lv = (LPNMLISTVIEW)lParam;
+int row = lv->iItem;
+if (listview->onactivate) {
+UiEvent event;
+event.obj = listview->obj;
+event.window = listview->obj->window;
+event.document = listview->obj->ctx->document;
+event.eventdata = NULL;
+event.eventdatatype = UI_EVENT_DATA_LIST_ELM;
+event.intval = row;
+event.set = ui_get_setop();
+if (listview->var) {
+UiList *list = listview->var->value;
+event.eventdata = list->get(list, row);
+event.eventdatatype = UI_EVENT_DATA_LIST_ELM;
+}
+listview->onactivate(&event, listview->onactivatedata);
+}
+break;
+}
+}
+break;
+}
+}
 }
 W32Size ui_listview_get_preferred_size(W32Widget *widget) {
 UiListView *listview = (UiListView*)widget;
 W32Size size;
 size.width = listview->preferred_width;
 size.height = listview->preferred_height;
 return size;
 }
+/*
+* Creates and inserts an LVITEM
+*
+* list: An UiList bound to an UiListView
+* row: row index
+* elm: list element (same as list->get(list, row))
+*/
 static void insert_item(UiList *list, int row, void *elm) {
 UiListView *listview = (UiListView*)list->obj;
 HWND hwnd = listview->widget.hwnd;
 UiModel *model = listview->model;
 item.iItem = row;
 item.iSubItem = 0;
 int idx = -1;
 for (int col=0;col<model->columns;col++) {
 UiBool freeResult = FALSE;
+// convert the list element to a value, that can be displayed in the list view
+// TODO: handle all model types
 char *str = listview->getvalue(list, elm, row, col, listview->getvaluedata, &freeResult);
 if (col == 0) {
 item.pszText = str;
 idx = ListView_InsertItem(hwnd, &item);
 } else {
 free(str);
 }
 }
 }
+/*
+* UiList->update function
+*
+* Updates one or all rows
+* row: list index or -1 for updating all rows
+*/
 void ui_listview_update(UiList *list, int row) {
 UiListView *listview = (UiListView*)list->obj;
 HWND hwnd = listview->widget.hwnd;
 UiModel *model = listview->model;
 if (row < 0) {
 ListView_DeleteItem(hwnd, row);
 void *elm = list->get(list, row);
 insert_item(list, row, elm);
 }
+// re-adjust all columns
 for (int i=0;i<model->columns;i++) {
 ListView_SetColumnWidth(hwnd, i, LVSCW_AUTOSIZE);
 }
 }
 UiListSelection ui_listview_getselection(UiList *list) {
-UiListSelection sel = { 0, NULL };
+UiListView *listview = (UiListView*)list->obj;
-return sel;
+return listview_get_selection(listview);
 }
 void ui_listview_setselection(UiList *list, UiListSelection selection) {
 }
+// public API
 UIWIDGET ui_listview_create(UiObject *obj, UiListArgs *args) {
 return listview_create(obj, args, FALSE);
 }
+// public API
 UIWIDGET ui_table_create(UiObject *obj, UiListArgs *args) {
 return listview_create(obj, args, TRUE);
 }

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comparison: ui/win32/list.c

ui/win32/list.c