cwUI.h/cpp : Added elementChildCount/UuId() and elementPhysChildCount/UuId().
emptyParent() now deletes child elements. Added _remove_ele_from_hash_table() to fix bug where destroyed elements were not removed from hash table.
This commit is contained in:
kevin
parent
6e56bec206
commit
7cc27cb8dd
203
cwUi.cpp
203
cwUi.cpp
@ -141,18 +141,32 @@ namespace cw
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void _store_ele_in_hash_table( ui_t* p, ele_t* e )
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{
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unsigned parentUuId = e->logical_parent == nullptr ? kInvalidIdx : e->logical_parent->uuId;
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unsigned parentUuId = e->logical_parent == nullptr ? kInvalidId : e->logical_parent->uuId;
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if( parentUuId == kInvalidId || e->appId == kInvalidId )
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return;
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unsigned short hash_idx = _gen_hash_index( parentUuId, e->appId );
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// if the first bucket is empty ...
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if( p->hashA[ hash_idx ].ele == nullptr )
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p->hashA[ hash_idx ].ele = e;
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p->hashA[ hash_idx ].ele = e; // ... then fill it
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else
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{
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bucket_t* b = mem::allocZ<bucket_t>();
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// otherwise look for an empty bucket
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bucket_t* b = p->hashA[ hash_idx ].link;
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for(; b!=nullptr; b=b->link)
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if( b->ele == nullptr )
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{
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b->ele = e; // an empty bucket was found - fill it
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return;
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}
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// create a new bucket
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b = mem::allocZ<bucket_t>();
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// and insert it as the second bucket
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b->link = p->hashA[ hash_idx ].link;
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b->ele = e;
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p->hashA[hash_idx].link = b;
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@ -173,9 +187,54 @@ namespace cw
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}
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return kInvalidId;
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}
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void _remove_ele_from_hash_table_0( ui_t* p, const ele_t* e )
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{
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// Note: hashA[] has hashN+1 elements
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for(unsigned i=0; i<=hashN; ++i)
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{
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bucket_t* b = p->hashA + i;
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for(; b!= nullptr; b=b->link)
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if( b->ele == e )
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{
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b->ele = nullptr;
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break;
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}
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}
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}
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void _remove_ele_from_hash_table( ui_t* p, const ele_t* e )
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{
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if( e == nullptr )
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return;
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unsigned parentUuId = e->logical_parent == nullptr ? kInvalidId : e->logical_parent->uuId;
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unsigned appId = e->appId;
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if( parentUuId == kInvalidId || appId == kInvalidId )
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{
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//_remove_ele_from_hash_table_0(p,e);
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return;
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}
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unsigned hash_idx = _gen_hash_index(parentUuId,appId);
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bucket_t* b = p->hashA + hash_idx;
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// locate the bucket to delete
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for(; b!=nullptr; b=b->link)
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{
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if( b->ele == e )
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{
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b->ele = nullptr;
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return;
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}
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}
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_remove_ele_from_hash_table_0(p,e);
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}
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void _print_eles( ui_t* p )
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{
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for(unsigned i=0; i<p->eleN; ++i)
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@ -199,7 +258,7 @@ namespace cw
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return _is_child_of( parent, ele->phys_parent ) || _is_child_of( parent, ele->logical_parent );
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}
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void _destroy_element( ele_t* e )
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void _destroy_element( ui_t* p, ele_t* e )
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{
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if( e == nullptr )
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return;
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@ -219,8 +278,10 @@ namespace cw
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// free each element
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if( p->eleA != nullptr )
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for(unsigned i=0; i<p->eleN; ++i)
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_destroy_element( p->eleA[i] );
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{
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_destroy_element( p, p->eleA[i] );
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p->eleA[i] = nullptr;
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}
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appIdMapRecd_t* m = p->appIdMap;
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while( m!=nullptr )
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@ -1975,10 +2036,28 @@ cw::rc_t cw::ui::setLogLine( handle_t h, unsigned uuId, const char* text )
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cw::rc_t cw::ui::emptyParent( handle_t h, unsigned uuId )
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{
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rc_t rc = kOkRC;
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unsigned childN = elementPhysChildCount(h,uuId);
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unsigned* childUuIdA = nullptr;
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ui_t* p = _handleToPtr(h);
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rc_t rc = kOkRC;
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if( childN > 0 )
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{
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childUuIdA = mem::alloc<unsigned>(childN);
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unsigned actualChildN = 0;
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if((rc = elementPhysChildUuId(h,uuId,childUuIdA,childN,actualChildN)) != kOkRC )
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goto errLabel;
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assert( actualChildN == childN );
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for(unsigned i=0; i<childN; ++i)
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if((rc = destroyElement(h,childUuIdA[i])) != kOkRC )
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{
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rc = cwLogError(rc,"Child element destroy failed.");
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goto errLabel;
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}
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}
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/*
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const char* mFmt = "{ \"op\":\"empty\", \"uuId\":%i }";
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const int mbufN = 256;
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char mbuf[mbufN];
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@ -1994,8 +2073,10 @@ cw::rc_t cw::ui::emptyParent( handle_t h, unsigned uuId )
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cwLogError(rc,"'empty' msg transmit failed.");
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goto errLabel;
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}
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*/
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errLabel:
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mem::release(childUuIdA);
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return rc;
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}
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@ -2134,6 +2215,87 @@ cw::rc_t cw::ui::clearBlob( handle_t h, unsigned uuId )
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return kOkRC;
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}
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unsigned cw::ui::elementChildCount( handle_t h, unsigned uuId )
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{
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ui_t* p = _handleToPtr(h);
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unsigned n = 0;
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ele_t* ele;
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if((ele = _uuIdToEle( p, uuId)) != nullptr )
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for(unsigned i=0; i<p->eleN; ++i)
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if( p->eleA[i] != nullptr && _is_child_of(ele, p->eleA[i] ))
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++n;
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return n;
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}
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cw::rc_t cw::ui::elementChildUuId( handle_t h, unsigned uuId, unsigned* bufA, unsigned bufN, unsigned& actualN )
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{
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rc_t rc = kOkRC;
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ui_t* p = _handleToPtr(h);
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unsigned n = 0;
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ele_t* ele;
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if((ele = _uuIdToEle( p, uuId)) != nullptr )
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for(unsigned i=0; i<p->eleN; ++i)
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if( p->eleA[i] != nullptr && _is_child_of(ele, p->eleA[i] ))
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{
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if( n >= bufN )
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{
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rc = cwLogError(kBufTooSmallRC,"The child ele. id buffer is too small.");
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goto errLabel;
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}
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bufA[n++] = p->eleA[i]->uuId;
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}
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actualN = n;
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errLabel:
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return rc;
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}
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unsigned cw::ui::elementPhysChildCount( handle_t h, unsigned uuId )
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{
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ui_t* p = _handleToPtr(h);
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unsigned n = 0;
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ele_t* ele;
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if((ele = _uuIdToEle( p, uuId)) != nullptr )
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for(unsigned i=0; i<p->eleN; ++i)
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if( p->eleA[i] != nullptr && p->eleA[i]->phys_parent == ele )
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++n;
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return n;
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}
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cw::rc_t cw::ui::elementPhysChildUuId( handle_t h, unsigned uuId, unsigned* bufA, unsigned bufN, unsigned& actualN )
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{
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rc_t rc = kOkRC;
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ui_t* p = _handleToPtr(h);
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unsigned n = 0;
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ele_t* ele;
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actualN = 0;
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if((ele = _uuIdToEle( p, uuId)) != nullptr )
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for(unsigned i=0; i<p->eleN; ++i)
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if( p->eleA[i] != nullptr && p->eleA[i]->phys_parent == ele )
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{
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if( n >= bufN )
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{
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rc = cwLogError(kBufTooSmallRC,"The child ele. id buffer is too small.");
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goto errLabel;
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}
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bufA[n++] = p->eleA[i]->uuId;
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}
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actualN = n;
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errLabel:
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return rc;
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}
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cw::rc_t cw::ui::destroyElement( handle_t h, unsigned uuId )
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{
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@ -2152,27 +2314,36 @@ cw::rc_t cw::ui::destroyElement( handle_t h, unsigned uuId )
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// mark the element for deletion
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del_ele->destroyFl = true;
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_remove_ele_from_hash_table(p, del_ele);
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// mark all child elements of 'del_ele' for deletion
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// mark all child elements of 'del_ele' for deletion and remove them from the hash table
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for(unsigned i=0; i<p->eleN; ++i)
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if( p->eleA[i] != nullptr )
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p->eleA[i]->destroyFl = _is_child_of(del_ele, p->eleA[i] );
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if( p->eleA[i] != nullptr && p->eleA[i] != del_ele )
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if((p->eleA[i]->destroyFl = _is_child_of(del_ele, p->eleA[i] )) == true )
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_remove_ele_from_hash_table(p, p->eleA[i]);
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// Note that all ele's that are going to be deleted
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// must be first removed from the hash table.
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// The ele's can't be removed from the hash table
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// as they are deleted because the removal fromo the hash table
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// requires accessing the logical parent - which may have already been deleted.
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// release all elements that are marked for deletion
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for(unsigned i=0; i<p->eleN; ++i)
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if( p->eleA[i] != nullptr && p->eleA[i]->destroyFl )
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{
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_destroy_element( p->eleA[i] );
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_destroy_element( p, p->eleA[i] );
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p->eleA[i] = nullptr;
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}
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snprintf(mbuf,mbufN, "{ \"op\":\"destroy\", \"uuId\":%i }", del_ele->uuId );
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snprintf(mbuf,mbufN, "{ \"op\":\"destroy\", \"uuId\":%i }", uuId );
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_websockSend(p,kInvalidId,mbuf);
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errLabel:
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if(rc != kOkRC )
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rc = cwLogError(rc,"Element delete failed.");
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rc = cwLogError(rc,"Element delete failed: uuid:%i.",uuId);
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return rc;
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}
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7
cwUi.h
7
cwUi.h
@ -166,6 +166,13 @@ namespace cw
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// Register parent/child/name app id's
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rc_t registerAppIdMap( handle_t h, const appIdMap_t* map, unsigned mapN );
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unsigned elementChildCount( handle_t h, unsigned uuId );
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rc_t elementChildUuId( handle_t h, unsigned uuId, unsigned* bufA, unsigned bufN, unsigned& actualN );
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unsigned elementPhysChildCount( handle_t h, unsigned uuId );
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rc_t elementPhysChildUuId( handle_t h, unsigned uuId, unsigned* bufA, unsigned bufN, unsigned& actualN );
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// Release an element an all of it's children.
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rc_t destroyElement( handle_t h, unsigned uuId );
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