From 13cabd9ef2c63cfd947f1f4604dd0a5eac165ecd Mon Sep 17 00:00:00 2001 From: Christopher James Lahey Date: Tue, 20 Mar 2001 23:18:47 +0000 Subject: Added these classes. 2001-03-20 Christopher James Lahey * e-table-memory-callbacks.c, e-table-memory-callbacks.h, e-table-memory.c, e-table-memory.h: Added these classes. * Makefile.am: Added e-table-memory-callbacks.c, e-table-memory-callbacks.h, e-table-memory.c, and e-table-memory.h. svn path=/trunk/; revision=8857 --- widgets/table/e-table-memory-callbacks.c | 254 ++++++++++++++++++++++++++++++ widgets/table/e-table-memory-callbacks.h | 72 +++++++++ widgets/table/e-table-memory.c | 258 +++++++++++++++++++++++++++++++ widgets/table/e-table-memory.h | 57 +++++++ 4 files changed, 641 insertions(+) create mode 100644 widgets/table/e-table-memory-callbacks.c create mode 100644 widgets/table/e-table-memory-callbacks.h create mode 100644 widgets/table/e-table-memory.c create mode 100644 widgets/table/e-table-memory.h diff --git a/widgets/table/e-table-memory-callbacks.c b/widgets/table/e-table-memory-callbacks.c new file mode 100644 index 0000000000..c1089b5f28 --- /dev/null +++ b/widgets/table/e-table-memory-callbacks.c @@ -0,0 +1,254 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ +/* + * e-table-memory-callbacks.c: a simple table model implementation + * that uses function pointers to simplify the creation of new, exotic + * and colorful tables in no time. + * + * Author: + * Miguel de Icaza (miguel@gnu.org) + * + * (C) 1999, 2000 Ximian, Inc. + */ + +#include +#include "e-table-memory-callbacks.h" + +enum { + ARG_0, + ARG_APPEND_ROW, +}; + +#define PARENT_TYPE e_table_memory_get_type () + +static int +etmc_column_count (ETableModel *etm) +{ + ETableMemoryCalbacks *etmc = E_TABLE_MEMORY_CALLBACKS(etm); + + if (etmc->col_count) + return etmc->col_count (etm, etmc->data); + else + return 0; +} + +static void * +etmc_value_at (ETableModel *etm, int col, int row) +{ + ETableMemoryCalbacks *etmc = E_TABLE_MEMORY_CALLBACKS(etm); + + if (etmc->value_at) + return etmc->value_at (etm, col, row, etmc->data); + else + return NULL; +} + +static void +etmc_set_value_at (ETableModel *etm, int col, int row, const void *val) +{ + ETableMemoryCalbacks *etmc = E_TABLE_MEMORY_CALLBACKS(etm); + + if (etmc->set_value_at) + etmc->set_value_at (etm, col, row, val, etmc->data); +} + +static gboolean +etmc_is_cell_editable (ETableModel *etm, int col, int row) +{ + ETableMemoryCalbacks *etmc = E_TABLE_MEMORY_CALLBACKS(etm); + + if (etmc->is_cell_editable) + return etmc->is_cell_editable (etm, col, row, etmc->data); + else + return FALSE; +} + +/* The default for etmc_duplicate_value is to return the raw value. */ +static void * +etmc_duplicate_value (ETableModel *etm, int col, const void *value) +{ + ETableMemoryCalbacks *etmc = E_TABLE_MEMORY_CALLBACKS(etm); + + if (etmc->duplicate_value) + return etmc->duplicate_value (etm, col, value, etmc->data); + else + return (void *)value; +} + +static void +etmc_free_value (ETableModel *etm, int col, void *value) +{ + ETableMemoryCalbacks *etmc = E_TABLE_MEMORY_CALLBACKS(etm); + + if (etmc->free_value) + etmc->free_value (etm, col, value, etmc->data); +} + +static void * +etmc_initialize_value (ETableModel *etm, int col) +{ + ETableMemoryCalbacks *etmc = E_TABLE_MEMORY_CALLBACKS(etm); + + if (etmc->initialize_value) + return etmc->initialize_value (etm, col, etmc->data); + else + return NULL; +} + +static gboolean +etmc_value_is_empty (ETableModel *etm, int col, const void *value) +{ + ETableMemoryCalbacks *etmc = E_TABLE_MEMORY_CALLBACKS(etm); + + if (etmc->value_is_empty) + return etmc->value_is_empty (etm, col, value, etmc->data); + else + return FALSE; +} + +static char * +etmc_value_to_string (ETableModel *etm, int col, const void *value) +{ + ETableMemoryCalbacks *etmc = E_TABLE_MEMORY_CALLBACKS(etm); + + if (etmc->value_to_string) + return etmc->value_to_string (etm, col, value, etmc->data); + else + return g_strdup (""); +} + +static void +etmc_append_row (ETableModel *etm, ETableModel *source, int row) +{ + ETableMemoryCalbacks *etmc = E_TABLE_MEMORY_CALLBACKS(etm); + + if (etmc->append_row) + etmc->append_row (etm, source, row, etmc->data); +} + +static void +etmc_get_arg (GtkObject *o, GtkArg *arg, guint arg_id) +{ + ETableMemoryCalbacks *etmc = E_TABLE_MEMORY_CALLBACKS (o); + + switch (arg_id){ + case ARG_APPEND_ROW: + GTK_VALUE_POINTER(*arg) = etmc->append_row; + break; + } +} + +static void +etmc_set_arg (GtkObject *o, GtkArg *arg, guint arg_id) +{ + ETableMemoryCalbacks *etmc = E_TABLE_MEMORY_CALLBACKS (o); + + switch (arg_id){ + case ARG_APPEND_ROW: + etmc->append_row = GTK_VALUE_POINTER(*arg); + break; + default: + arg->type = GTK_TYPE_INVALID; + } +} + +static void +e_table_memory_callbacks_class_init (GtkObjectClass *object_class) +{ + ETableModelClass *model_class = (ETableModelClass *) object_class; + + object_class->set_arg = etmc_set_arg; + object_class->get_arg = etmc_get_arg; + + model_class->column_count = etmc_column_count; + model_class->value_at = etmc_value_at; + model_class->set_value_at = etmc_set_value_at; + model_class->is_cell_editable = etmc_is_cell_editable; + model_class->duplicate_value = etmc_duplicate_value; + model_class->free_value = etmc_free_value; + model_class->initialize_value = etmc_initialize_value; + model_class->value_is_empty = etmc_value_is_empty; + model_class->value_to_string = etmc_value_to_string; + model_class->append_row = etmc_append_row; + + gtk_object_add_arg_type ("ETableMemoryCalbacks::append_row", GTK_TYPE_POINTER, + GTK_ARG_READWRITE, ARG_APPEND_ROW); +} + +GtkType +e_table_memory_callbacks_get_type (void) +{ + static GtkType type = 0; + + if (!type){ + GtkTypeInfo info = { + "ETableMemoryCalbacks", + sizeof (ETableMemoryCalbacks), + sizeof (ETableMemoryCalbacksClass), + (GtkClassInitFunc) e_table_memory_callbacks_class_init, + (GtkObjectInitFunc) NULL, + NULL, /* reserved 1 */ + NULL, /* reserved 2 */ + (GtkClassInitFunc) NULL + }; + + type = gtk_type_unique (PARENT_TYPE, &info); + } + + return type; +} + +/** + * e_table_memory_callbacks_new: + * @col_count: + * @value_at: + * @set_value_at: + * @is_cell_editable: + * @duplicate_value: + * @free_value: + * @initialize_value: + * @value_is_empty: + * @value_to_string: + * @data: closure pointer. + * + * This initializes a new ETableMemoryCalbacksModel object. ETableMemoryCalbacksModel is + * an implementaiton of the abstract class ETableModel. The ETableMemoryCalbacksModel + * is designed to allow people to easily create ETableModels without having + * to create a new GtkType derived from ETableModel every time they need one. + * + * Instead, ETableMemoryCalbacksModel uses a setup based in callback functions, every + * callback function signature mimics the signature of each ETableModel method + * and passes the extra @data pointer to each one of the method to provide them + * with any context they might want to use. + * + * Returns: An ETableMemoryCalbacksModel object (which is also an ETableModel + * object). + */ +ETableModel * +e_table_memory_callbacks_new (ETableMemoryCalbacksColumnCountFn col_count, + ETableMemoryCalbacksValueAtFn value_at, + ETableMemoryCalbacksSetValueAtFn set_value_at, + ETableMemoryCalbacksIsCellEditableFn is_cell_editable, + ETableMemoryCalbacksDuplicateValueFn duplicate_value, + ETableMemoryCalbacksFreeValueFn free_value, + ETableMemoryCalbacksInitializeValueFn initialize_value, + ETableMemoryCalbacksValueIsEmptyFn value_is_empty, + ETableMemoryCalbacksValueToStringFn value_to_string, + void *data) +{ + ETableMemoryCalbacks *et; + + et = gtk_type_new (e_table_memory_callbacks_get_type ()); + + et->col_count = col_count; + et->value_at = value_at; + et->set_value_at = set_value_at; + et->is_cell_editable = is_cell_editable; + et->duplicate_value = duplicate_value; + et->free_value = free_value; + et->initialize_value = initialize_value; + et->value_is_empty = value_is_empty; + et->value_to_string = value_to_string; + et->data = data; + + return (ETableModel *) et; + } diff --git a/widgets/table/e-table-memory-callbacks.h b/widgets/table/e-table-memory-callbacks.h new file mode 100644 index 0000000000..72f637f764 --- /dev/null +++ b/widgets/table/e-table-memory-callbacks.h @@ -0,0 +1,72 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ +#ifndef _E_TABLE_MEMORY_CALLBACKS_H_ +#define _E_TABLE_MEMORY_CALLBACKS_H_ + +#include + +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + +#define E_TABLE_MEMORY_CALLBACKS_TYPE (e_table_memory_callbacks_get_type ()) +#define E_TABLE_MEMORY_CALLBACKS(o) (GTK_CHECK_CAST ((o), E_TABLE_MEMORY_CALLBACKS_TYPE, ETableMemoryCalbacks)) +#define E_TABLE_MEMORY_CALLBACKS_CLASS(k) (GTK_CHECK_CLASS_CAST((k), E_TABLE_MEMORY_CALLBACKS_TYPE, ETableMemoryCalbacksClass)) +#define E_IS_TABLE_MEMORY_CALLBACKS(o) (GTK_CHECK_TYPE ((o), E_TABLE_MEMORY_CALLBACKS_TYPE)) +#define E_IS_TABLE_MEMORY_CALLBACKS_CLASS(k) (GTK_CHECK_CLASS_TYPE ((k), E_TABLE_MEMORY_CALLBACKS_TYPE)) + +typedef int (*ETableMemoryCalbacksColumnCountFn) (ETableModel *etm, void *data); +typedef void (*ETableMemoryCalbacksAppendRowFn) (ETableModel *etm, ETableModel *model, int row, void *data); + +typedef void *(*ETableMemoryCalbacksValueAtFn) (ETableModel *etm, int col, int row, void *data); +typedef void (*ETableMemoryCalbacksSetValueAtFn) (ETableModel *etm, int col, int row, const void *val, void *data); +typedef gboolean (*ETableMemoryCalbacksIsCellEditableFn) (ETableModel *etm, int col, int row, void *data); + +typedef void *(*ETableMemoryCalbacksDuplicateValueFn) (ETableModel *etm, int col, const void *val, void *data); +typedef void (*ETableMemoryCalbacksFreeValueFn) (ETableModel *etm, int col, void *val, void *data); +typedef void *(*ETableMemoryCalbacksInitializeValueFn) (ETableModel *etm, int col, void *data); +typedef gboolean (*ETableMemoryCalbacksValueIsEmptyFn) (ETableModel *etm, int col, const void *val, void *data); +typedef char *(*ETableMemoryCalbacksValueToStringFn) (ETableModel *etm, int col, const void *val, void *data); + +typedef struct { + ETableMemory parent; + + ETableMemoryCalbacksColumnCountFn col_count; + ETableMemoryCalbacksAppendRowFn append_row; + + ETableMemoryCalbacksValueAtFn value_at; + ETableMemoryCalbacksSetValueAtFn set_value_at; + ETableMemoryCalbacksIsCellEditableFn is_cell_editable; + + ETableMemoryCalbacksDuplicateValueFn duplicate_value; + ETableMemoryCalbacksFreeValueFn free_value; + ETableMemoryCalbacksInitializeValueFn initialize_value; + ETableMemoryCalbacksValueIsEmptyFn value_is_empty; + ETableMemoryCalbacksValueToStringFn value_to_string; + void *data; +} ETableMemoryCalbacks; + +typedef struct { + ETableMemoryClass parent_class; +} ETableMemoryCalbacksClass; + +GtkType e_table_memory_callbacks_get_type (void); + +ETableModel *e_table_memory_callbacks_new (ETableMemoryCalbacksColumnCountFn col_count, + + ETableMemoryCalbacksValueAtFn value_at, + ETableMemoryCalbacksSetValueAtFn set_value_at, + ETableMemoryCalbacksIsCellEditableFn is_cell_editable, + + ETableMemoryCalbacksDuplicateValueFn duplicate_value, + ETableMemoryCalbacksFreeValueFn free_value, + ETableMemoryCalbacksInitializeValueFn initialize_value, + ETableMemoryCalbacksValueIsEmptyFn value_is_empty, + ETableMemoryCalbacksValueToStringFn value_to_string, + void *data); + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + +#endif /* _E_TABLE_MEMORY_CALLBACKS_H_ */ + diff --git a/widgets/table/e-table-memory.c b/widgets/table/e-table-memory.c new file mode 100644 index 0000000000..87e8121294 --- /dev/null +++ b/widgets/table/e-table-memory.c @@ -0,0 +1,258 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ +/* + * e-table-memory.c: a Table Model implementation that the programmer builds in memory. + * + * Author: + * Chris Toshok (toshok@ximian.com) + * Chris Lahey + * + * Adapted from the gtable code and ETableModel. + * + * (C) 2000, 2001 Ximian, Inc. + */ +#include + +#include +#include +#include +#include + +#include +#include + +#include +#include +#include "gal/util/e-util.h" +#include "gal/util/e-xml-utils.h" +#include "e-table-memory.h" + +#define PARENT_TYPE E_TABLE_MODEL_TYPE + +static ETableModel *parent_class; + +struct ETableMemoryPriv { + gpointer *data; + int num_rows; + gint frozen; +}; + + +/* virtual methods */ + +static void +etmm_destroy (GtkObject *object) +{ + ETableMemory *etmm = E_TABLE_MEMORY (object); + ETableMemoryPriv *priv = etmm->priv; + + /* XXX lots of stuff to free here */ + + g_free (priv->data); + g_free (priv); + + GTK_OBJECT_CLASS (parent_class)->destroy (object); +} + +static int +etmm_row_count (ETableModel *etm) +{ + ETableMemory *etmm = E_TABLE_MEMORY (etm); + + return etmm->priv->num_rows; +} + + +static void +e_table_memory_class_init (GtkObjectClass *klass) +{ + ETableModelClass *table_class = (ETableModelClass *) klass; + + parent_class = gtk_type_class (PARENT_TYPE); + + klass->destroy = etmm_destroy; + + table_class->row_count = etmm_row_count; +} + +static void +e_table_memory_init (GtkObject *object) +{ + ETableMemory *etmm = (ETableMemory *)object; + + ETableMemoryPriv *priv; + + priv = g_new0 (ETableMemoryPriv, 1); + etmm->priv = priv; + + priv->data = NULL; + priv->num_rows = 0; + priv->frozen = 0; +} + +E_MAKE_TYPE(e_table_memory, "ETableMemory", ETableMemory, e_table_memory_class_init, e_table_memory_init, PARENT_TYPE) + + + +/** + * e_table_memory_construct: + * @etable: + * + * + **/ +void +e_table_memory_construct (ETableMemory *etmm) +{ +} + +/** + * e_table_memory_new + * + * XXX docs here. + * + * return values: a newly constructed ETableMemory. + */ +ETableMemory * +e_table_memory_new (void) +{ + ETableMemory *etmm; + + etmm = gtk_type_new (e_table_memory_get_type ()); + + e_table_memory_construct(etmm); + + return etmm; +} + +/** + * e_table_memory_node_get_data: + * @etmm: + * @node: + * + * + * + * Return value: + **/ +gpointer +e_table_memory_get_data (ETableMemory *etmm, int row) +{ + g_return_val_if_fail(row < 0, NULL); + g_return_val_if_fail(row >= etmm->priv->num_rows, NULL); + + return etmm->priv->data[row]; +} + +/** + * e_table_memory_node_set_data: + * @etmm: + * @node: + * @node_data: + * + * + **/ +void +e_table_memory_set_data (ETableMemory *etmm, int row, gpointer node_data) +{ + g_return_if_fail(row < 0); + g_return_if_fail(row > etmm->priv->num_rows); + + etmm->priv->data[row] = node_data; +} + +/** + * e_table_memory_node_insert: + * @table_model: + * @parent_path: + * @position: + * @node_data: + * + * + * + * Return value: + **/ +void +e_table_memory_node_insert (ETableMemory *etmm, + int row, + gpointer node_data) +{ + g_return_if_fail(row < 0); + g_return_if_fail(row > etmm->priv->num_rows); + + if (!etmm->priv->frozen) + e_table_model_pre_change(E_TABLE_MODEL(etmm)); + etmm->priv->data = g_renew(gpointer, etmm->priv->data, etmm->priv->num_rows + 1); + memmove(etmm->priv->data + row + 1, etmm->priv->data + row, (etmm->priv->num_rows - row) * sizeof (gpointer)); + etmm->priv->data[row] = node_data; + etmm->priv->num_rows ++; + if (!etmm->priv->frozen) + e_table_model_row_inserted(E_TABLE_MODEL(etmm), row); +} + + + +/** + * e_table_memory_node_remove: + * @etable: + * @path: + * + * + * + * Return value: + **/ +gpointer +e_table_memory_node_remove (ETableMemory *etmm, int row) +{ + gpointer ret; + + g_return_val_if_fail(row < 0, NULL); + g_return_val_if_fail(row >= etmm->priv->num_rows, NULL); + + if (!etmm->priv->frozen) + e_table_model_pre_change(E_TABLE_MODEL(etmm)); + ret = etmm->priv->data[row]; + memmove(etmm->priv->data + row, etmm->priv->data + row + 1, (etmm->priv->num_rows - row - 1) * sizeof (gpointer)); + etmm->priv->num_rows --; + if (!etmm->priv->frozen) + e_table_model_row_deleted(E_TABLE_MODEL(etmm), row); + return ret; +} + +/** + * e_table_memory_freeze: + * @etmm: the ETableModel to freeze. + * + * This function prepares an ETableModel for a period of much change. + * All signals regarding changes to the table are deferred until we + * thaw the table. + * + **/ +void +e_table_memory_freeze(ETableMemory *etmm) +{ + ETableMemoryPriv *priv = etmm->priv; + + if (priv->frozen == 0) + e_table_model_pre_change(E_TABLE_MODEL(etmm)); + + priv->frozen ++; +} + +/** + * e_table_memory_thaw: + * @etmm: the ETableMemory to thaw. + * + * This function thaws an ETableMemory. All the defered signals can add + * up to a lot, we don't know - so we just emit a model_changed + * signal. + * + **/ +void +e_table_memory_thaw(ETableMemory *etmm) +{ + ETableMemoryPriv *priv = etmm->priv; + + if (priv->frozen > 0) + priv->frozen --; + if (priv->frozen == 0) { + e_table_model_changed(E_TABLE_MODEL(etmm)); + } +} diff --git a/widgets/table/e-table-memory.h b/widgets/table/e-table-memory.h new file mode 100644 index 0000000000..e1c7558dc4 --- /dev/null +++ b/widgets/table/e-table-memory.h @@ -0,0 +1,57 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ +#ifndef _E_TABLE_MEMORY_H_ +#define _E_TABLE_MEMORY_H_ + +#include +#include + +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + + +#define E_TABLE_MEMORY_TYPE (e_table_memory_get_type ()) +#define E_TABLE_MEMORY(o) (GTK_CHECK_CAST ((o), E_TABLE_MEMORY_TYPE, ETableMemory)) +#define E_TABLE_MEMORY_CLASS(k) (GTK_CHECK_CLASS_CAST((k), E_TABLE_MEMORY_TYPE, ETableMemoryClass)) +#define E_IS_TABLE_MEMORY(o) (GTK_CHECK_TYPE ((o), E_TABLE_MEMORY_TYPE)) +#define E_IS_TABLE_MEMORY_CLASS(k) (GTK_CHECK_CLASS_TYPE ((k), E_TABLE_MEMORY_TYPE)) + +typedef struct ETableMemory ETableMemory; +typedef struct ETableMemoryPriv ETableMemoryPriv; +typedef struct ETableMemoryClass ETableMemoryClass; + +struct ETableMemory { + ETableModel base; + ETableMemoryPriv *priv; +}; + +struct ETableMemoryClass { + ETableModelClass parent_class; +}; + + +GtkType e_table_memory_get_type (void); +void e_table_memory_construct (ETableMemory *etable); +ETableMemory *e_table_memory_new (void); + +/* node operations */ +void e_table_memory_node_insert (ETableMemory *etable, + int row, + gpointer node_data); +gpointer e_table_memory_node_remove (ETableMemory *etable, + int row); + +/* Freeze and thaw */ +void e_table_memory_freeze (ETableMemory *etable); +void e_table_memory_thaw (ETableMemory *etable); +gpointer e_table_memory_get_data (ETableMemory *etm, + int row); +void e_table_memory_set_data (ETableMemory *etm, + int row, + gpointer node_data); + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + +#endif /* _E_TABLE_MEMORY_H */ -- cgit v1.2.3