ui/common/document.c

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2017 Olaf Wintermann. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *   1. Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *
 *   2. Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in the
 *      documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * 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 <string.h>

#include "document.h"

#include <cx/hash_map.h>
#include <cx/mempool.h>

static CxMap *documents;

void uic_docmgr_init() {
    if (!documents) {
        documents = cxHashMapCreate(cxDefaultAllocator, CX_STORE_POINTERS, 32);
    }
}

void ui_set_document(UiObject *obj, void *document) {
    uic_context_detach_all(obj->ctx);
    obj->ctx->attach_document(obj->ctx, document);
}

void ui_detach_document(UiObject *obj) {
    uic_context_detach_all(obj->ctx);
}

void* ui_get_document(UiObject *obj) {
    return obj->ctx->document;
}

void ui_set_subdocument(void *document, void *sub) {
    UiContext *ctx = ui_document_context(document);
    if(!ctx) {
        fprintf(stderr, "UI Error: pointer is not a document\n");
    }
    // TODO
}

void ui_detach_subdocument(void *document, void *sub) {
    UiContext *ctx = ui_document_context(document);
    if(!ctx) {
        fprintf(stderr, "UI Error: pointer is not a document\n");
    }
    // TODO
}

void* ui_get_subdocument(void *document) {
    UiContext *ctx = ui_document_context(document);
    if(!ctx) {
        fprintf(stderr, "UI Error: pointer is not a document\n");
    }
    // TODO
    return NULL;
}

void* ui_document_new(size_t size) {
    CxMempool *mp = cxMempoolCreate(256, NULL);
    const CxAllocator *a = mp->allocator;
    UiContext *ctx = cxCalloc(a, 1, sizeof(UiContext));
    ctx->attach_document = uic_context_attach_document;
    ctx->detach_document2 = uic_context_detach_document2;
    ctx->allocator = a;
    ctx->vars = cxHashMapCreate(a, CX_STORE_POINTERS, 16);
    
    void *document = cxCalloc(a, 1, size);
    cxMapPut(documents, cx_hash_key(&document, sizeof(void*)), ctx);
    return document;
}

void ui_document_destroy(void *doc) {
    // TODO
}

UiContext* ui_document_context(void *doc) {
    if(doc) {
        return cxMapGet(documents, cx_hash_key(&doc, sizeof(void*)));
    } else {
        return NULL;
    }
}