michael@0: 
michael@0: /*
michael@0:  * Copyright 2011 Google Inc.
michael@0:  *
michael@0:  * Use of this source code is governed by a BSD-style license that can be
michael@0:  * found in the LICENSE file.
michael@0:  */
michael@0: #include "SkViewInflate.h"
michael@0: #include "SkView.h"
michael@0: #include <stdio.h>
michael@0: 
michael@0: SkViewInflate::SkViewInflate() : fIDs(kMinIDStrAlloc), fStrings(kMinIDStrAlloc)
michael@0: {
michael@0: }
michael@0: 
michael@0: SkViewInflate::~SkViewInflate()
michael@0: {
michael@0: }
michael@0: 
michael@0: void SkViewInflate::rInflate(const SkDOM& dom, const SkDOM::Node* node, SkView* parent)
michael@0: {
michael@0:     const char* str = dom.findAttr(node, "id");
michael@0:     if (str)
michael@0:         fIDs.set(str, parent);
michael@0: 
michael@0:     const SkDOM::Node* child = dom.getFirstChild(node);
michael@0:     while (child)
michael@0:     {
michael@0:         SkView* view = this->createView(dom, child);
michael@0:         if (view)
michael@0:         {
michael@0:             this->rInflate(dom, child, view);
michael@0:             parent->attachChildToFront(view)->unref();
michael@0:         }
michael@0:         else
michael@0:         {
michael@0:             const char* name = dom.getName(child);
michael@0:             const char* target;
michael@0: 
michael@0:             if (!strcmp(name, "listenTo") && (target = dom.findAttr(child, "target")) != NULL)
michael@0:                 this->addIDStr(&fListenTo, parent, target);
michael@0: 
michael@0:             if (!strcmp(name, "broadcastTo") && (target = dom.findAttr(child, "target")) != NULL)
michael@0:                 this->addIDStr(&fBroadcastTo, parent, target);
michael@0:         }
michael@0:         child = dom.getNextSibling(child);
michael@0:     }
michael@0: 
michael@0:     parent->setVisibleP(true);
michael@0:     this->inflateView(parent, dom, node);
michael@0: }
michael@0: 
michael@0: void SkViewInflate::inflateView(SkView* view, const SkDOM& dom, const SkDOM::Node* node)
michael@0: {
michael@0:     // called after all of view's children have been instantiated.
michael@0:     // this may be overridden by a subclass, to load in layout or other helpers
michael@0:     // they should call through to us (INHERITED) before or after their patch
michael@0:     view->inflate(dom, node);
michael@0: }
michael@0: 
michael@0: SkView* SkViewInflate::inflate(const SkDOM& dom, const SkDOM::Node* node, SkView* root)
michael@0: {
michael@0:     fIDs.reset();
michael@0: 
michael@0:     if (root == NULL)
michael@0:     {
michael@0:         root = this->createView(dom, node);
michael@0:         if (root == NULL)
michael@0:         {
michael@0:             printf("createView returned NULL on <%s>\n", dom.getName(node));
michael@0:             return NULL;
michael@0:         }
michael@0:     }
michael@0:     this->rInflate(dom, node, root);
michael@0: 
michael@0:     // resolve listeners and broadcasters
michael@0:     {
michael@0:         SkView*            target;
michael@0:         const IDStr*    iter = fListenTo.begin();
michael@0:         const IDStr*    stop = fListenTo.end();
michael@0:         for (; iter < stop; iter++)
michael@0:         {
michael@0:             if (fIDs.find(iter->fStr, &target))
michael@0:                 target->addListenerID(iter->fView->getSinkID());
michael@0:         }
michael@0: 
michael@0:         iter = fBroadcastTo.begin();
michael@0:         stop = fBroadcastTo.end();
michael@0:         for (; iter < stop; iter++)
michael@0:         {
michael@0:             if (fIDs.find(iter->fStr, &target))
michael@0:                 iter->fView->addListenerID(target->getSinkID());
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     // now that the tree is built, give everyone a shot at the ID dict
michael@0:     root->postInflate(fIDs);
michael@0:     return root;
michael@0: }
michael@0: 
michael@0: SkView* SkViewInflate::inflate(const char xml[], size_t len, SkView* root)
michael@0: {
michael@0:     SkDOM                dom;
michael@0:     const SkDOM::Node*    node = dom.build(xml, len);
michael@0: 
michael@0:     return node ? this->inflate(dom, node, root) : NULL;
michael@0: }
michael@0: 
michael@0: SkView* SkViewInflate::findViewByID(const char id[]) const
michael@0: {
michael@0:     SkASSERT(id);
michael@0:     SkView* view;
michael@0:     return fIDs.find(id, &view) ? view : NULL;
michael@0: }
michael@0: 
michael@0: SkView* SkViewInflate::createView(const SkDOM& dom, const SkDOM::Node* node)
michael@0: {
michael@0:     if (!strcmp(dom.getName(node), "view"))
michael@0:         return new SkView;
michael@0:     return NULL;
michael@0: }
michael@0: 
michael@0: void SkViewInflate::addIDStr(SkTDArray<IDStr>* list, SkView* view, const char* str)
michael@0: {
michael@0:     size_t len = strlen(str) + 1;
michael@0:     IDStr* pair = list->append();
michael@0:     pair->fView = view;
michael@0:     pair->fStr = (char*)fStrings.alloc(len, SkChunkAlloc::kThrow_AllocFailType);
michael@0:     memcpy(pair->fStr, str, len);
michael@0: }
michael@0: 
michael@0: #ifdef SK_DEBUG
michael@0: void SkViewInflate::dump() const
michael@0: {
michael@0:     const IDStr* iter = fListenTo.begin();
michael@0:     const IDStr* stop = fListenTo.end();
michael@0:     for (; iter < stop; iter++)
michael@0:         SkDebugf("inflate: listenTo(\"%s\")\n", iter->fStr);
michael@0: 
michael@0:     iter = fBroadcastTo.begin();
michael@0:     stop = fBroadcastTo.end();
michael@0:     for (; iter < stop; iter++)
michael@0:         SkDebugf("inflate: broadcastFrom(\"%s\")\n", iter->fStr);
michael@0: }
michael@0: #endif