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218 lines
6.7 KiB
218 lines
6.7 KiB
/***************************************************************************
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* This file is part of the KDE project
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* copyright (C) 2006 by Sebastian Sauer (mail@dipe.org)
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* copyright (C) 2006 by Sascha Kupper (kusato@kfnv.de)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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* You should have received a copy of the GNU Library General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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***************************************************************************/
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#include "macroitem.h"
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#include <kdebug.h>
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using namespace KoMacro;
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namespace KoMacro {
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/**
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* @internal d-pointer class to be more flexible on future extension of the
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* functionality without to much risk to break the binary compatibility.
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*/
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class MacroItem::Private
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{
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public:
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/**
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* The @a Action this @a MacroItem has.
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*/
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TDESharedPtr<Action> action;
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/**
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* The comment this @a MacroItem has.
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*/
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TQString comment;
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/**
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* The @a TQMap of @a Variable this @a MacroItem has.
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*/
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Variable::Map variables;
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/**
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* define a @a TQVariant -cast as inline for better performance
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* @return the casted @a TQVariant by passing a @param variant and its
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* expected TQVariant::Type @param type.
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*/
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inline const TQVariant cast(const TQVariant& variant, TQVariant::Type type) const
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{
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// If ok is true the TQVariant v holds our new and to the correct type
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// casted variant value. If ok is false the as argument passed variant
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// TQVariant contains the (maybe uncasted string to prevent data-loosing
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// what would happen if we e.g. would expect an integer and cast it to
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// an incompatible non-int string) value.
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bool ok = false;
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TQVariant v;
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// Try to cast the passed variant to the expected variant-type.
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switch(type) {
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case TQVariant::Bool: {
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const TQString s = variant.toString();
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ok = (s == "true" || s == "false" || s == "0" || s == "1" || s == "-1");
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v = TQVariant( variant.toBool(), 0 );
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} break;
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case TQVariant::Int: {
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v = variant.toInt(&ok);
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// Check if the cast is correct.
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Q_ASSERT(!ok || v.toString() == variant.toString());
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} break;
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case TQVariant::UInt: {
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v = variant.toUInt(&ok);
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Q_ASSERT(!ok || v.toString() == variant.toString());
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} break;
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case TQVariant::LongLong: {
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v = variant.toLongLong(&ok);
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Q_ASSERT(!ok || v.toString() == variant.toString());
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} break;
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case TQVariant::ULongLong: {
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v = variant.toULongLong(&ok);
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Q_ASSERT(!ok || v.toString() == variant.toString());
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} break;
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case TQVariant::Double: {
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v = variant.toDouble(&ok);
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Q_ASSERT(!ok || v.toString() == variant.toString());
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} break;
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case TQVariant::String: {
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ok = true; // cast will always be successfully
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v = variant.toString();
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} break;
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default: {
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// If we got another type we try to let TQt handle it...
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ok = v.cast(type);
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kdWarning()<<"MacroItem::Private::cast() Unhandled ok="<<ok<<" type="<<type<<" value="<<v<<endl;
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} break;
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}
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return ok ? v : variant;
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}
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};
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}
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MacroItem::MacroItem()
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: TDEShared()
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, d( new Private() )
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{
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}
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MacroItem::~MacroItem()
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{
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delete d;
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}
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TQString MacroItem::comment() const
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{
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return d->comment;
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}
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void MacroItem::setComment(const TQString& comment)
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{
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d->comment = comment;
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}
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TDESharedPtr<Action> MacroItem::action() const
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{
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return d->action;
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}
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void MacroItem::setAction(TDESharedPtr<Action> action)
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{
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d->action = action;
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}
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TQVariant MacroItem::variant(const TQString& name, bool checkaction) const
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{
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TDESharedPtr<Variable> v = variable(name, checkaction);
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return v.data() ? v->variant() : TQVariant();
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}
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TDESharedPtr<Variable> MacroItem::variable(const TQString& name, bool checkaction) const
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{
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if(d->variables.contains(name))
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return d->variables[name];
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if(checkaction && d->action.data())
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return d->action->variable(name);
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return TDESharedPtr<Variable>(0);
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}
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Variable::Map MacroItem::variables() const
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{
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return d->variables;
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}
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bool MacroItem::setVariant(const TQString& name, const TQVariant& variant)
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{
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// Let's look if there is an action defined for the variable. If that's
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// the case, we try to use that action to preserve the type of the variant.
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TDESharedPtr<Variable> actionvariable = d->action ? d->action->variable(name) : TDESharedPtr<Variable>(0);
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// If we know the expected type, we try to cast the variant to the expected
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// type else the variant stays untouched (so, it will stay a string).
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const TQVariant v = actionvariable.data()
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? d->cast(variant, actionvariable->variant().type()) // try to cast the variant
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: variant; // don't cast anything, just leave the string-type...
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// Now let's try to determinate the variable which should be changed.
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TDESharedPtr<Variable> variable = d->variables[name];
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if(! variable.data()) {
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// if there exists no such variable yet, create one.
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kdDebug() << "MacroItem::setVariable() Creating new variable name=" << name << endl;
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variable = TDESharedPtr<Variable>( new Variable() );
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variable->setName(name);
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d->variables.replace(name, variable);
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}
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// Remember the previous value for the case we like to restore it.
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const TQVariant oldvar = variable->variant();
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// Set the variable.
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variable->setVariant(v);
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// Now we inform the referenced action that a variable changed. If
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// notifyUpdated() returns false, the action rejects the new variable
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// and we need to restore the previous value.
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if(d->action && ! d->action->notifyUpdated(this, name)) {
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kdWarning() << "MacroItem::setVariable() Notify failed for variable name=" << name << endl;
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variable->setVariant(oldvar);
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return false; // the action rejected the changed variable whyever...
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}
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// Job done successfully. The variable is changed to the new value.
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return true;
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}
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TDESharedPtr<Variable> MacroItem::addVariable(const TQString& name, const TQVariant& variant)
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{
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Q_ASSERT(! d->variables.contains(name) );
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// Create a new Variable.
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TDESharedPtr<Variable> variable = TDESharedPtr<Variable>( new Variable() );
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variable->setName(name);
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// Put it into the Variable-map.
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d->variables.replace(name, variable);
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// Set the variant of the Variable.
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this->setVariant(name, variant);
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return variable;
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}
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