You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
qalculate-tde/src/qalculateeditvariabledialog...

306 lines
9.9 KiB

/***************************************************************************
* Copyright (C) 2005 by Niklas Knutsson *
* nq@altern.org *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include "qalculateeditvariabledialog.h"
#include "qalculate_tde_utils.h"
#include "qalculateeditnamesdialog.h"
#include <string>
#include <tqgrid.h>
#include <klineedit.h>
#include <tqpushbutton.h>
#include <kcombobox.h>
#include <tqlabel.h>
#include <tdelocale.h>
#include <tqvbox.h>
#include <tqhbox.h>
#include <tqcheckbox.h>
#include <tdemessagebox.h>
#include <tqlayout.h>
#include <tdeapplication.h>
extern PrintOptions printops;
extern EvaluationOptions evalops;
extern tree_struct variable_cats;
QalculateEditVariableDialog::QalculateEditVariableDialog(TQWidget *parent, const char *name) : KDialogBase(parent, name, true, i18n("Edit Variable"), Ok | Cancel | Help, Ok, true) {
names_edit_dialog = NULL;
edited_variable = NULL;
setMainWidget(new TQWidget(this));
TQGridLayout *grid = new TQGridLayout(mainWidget(), 6, 2, 0, spacingHint());
nameLabel = new TQLabel(i18n("Name:"), mainWidget());
grid->addWidget(nameLabel, 0, 0);
nameEdit = new KLineEdit(mainWidget());
grid->addWidget(nameEdit, 0, 1);
TQHBoxLayout *hbox = new TQHBoxLayout(0, 0, spacingHint());
grid->addMultiCellLayout(hbox, 1, 1, 0, 1);
namesLabel = new TQLabel(mainWidget());
namesLabel->setAlignment(TQt::AlignRight);
namesLabel->setSizePolicy(TQSizePolicy::Expanding, TQSizePolicy::Preferred);
hbox->addWidget(namesLabel);
namesButton = new TQPushButton(i18n("Names Details"), mainWidget());
hbox->addWidget(namesButton);
valueLabel = new TQLabel(i18n("Value:"), mainWidget());
grid->addWidget(valueLabel, 2, 0);
valueEdit = new KLineEdit(mainWidget());
grid->addWidget(valueEdit, 2, 1);
hbox = new TQHBoxLayout(0, 0, spacingHint());
grid->addMultiCellLayout(hbox, 3, 3, 0, 1);
hbox->addItem(new TQSpacerItem(0, 0, TQSizePolicy::Expanding, TQSizePolicy::Minimum));
valueExactButton = new TQCheckBox(i18n("Value is exact"), mainWidget());
hbox->addWidget(valueExactButton);
grid->addWidget(new TQLabel(i18n("Category:"), mainWidget()), 4, 0);
categoryCombo = new KComboBox(mainWidget());
grid->addWidget(categoryCombo, 4, 1);
categoryCombo->setMaximumWidth(250);
categoryCombo->setEditable(true);
titleLabel = new TQLabel(i18n("Descriptive name:"), mainWidget());
grid->addWidget(titleLabel, 5, 0);
titleEdit = new KLineEdit(mainWidget());
grid->addWidget(titleEdit, 5, 1);
connect(namesButton, SIGNAL(clicked()), this, SLOT(editNames()));
connect(nameEdit, SIGNAL(textChanged(const TQString&)), this, SLOT(nameChanged(const TQString&)));
}
QalculateEditVariableDialog::~QalculateEditVariableDialog() {}
void QalculateEditVariableDialog::slotHelp() {
TDEApplication::kApplication()->invokeHelp("qalculate-variable-creation");
}
void QalculateEditVariableDialog::slotOk() {
std::string str = nameEdit->text().ascii();
remove_blank_ends(str);
if(str.empty() && (!names_edit_dialog || names_edit_dialog->isEmpty())) {
//no name -- open dialog again
nameEdit->setFocus();
KMessageBox::error(this, i18n("Empty name field"));
return;
}
std::string str2 = valueEdit->text().ascii();
remove_blank_ends(str2);
if(!(init_value && force_init_value) && str2.empty()) {
//no value -- open dialog again
valueEdit->setFocus();
KMessageBox::error(this, i18n("Empty value field"));
return;
}
//variable with the same name exists -- overwrite or open dialog again
if((!edited_variable || !edited_variable->hasName(str)) && (!names_edit_dialog || names_edit_dialog->isEmpty()) && CALCULATOR->variableNameTaken(str, edited_variable) && KMessageBox::questionYesNo(this, i18n("An unit or variable with the same name already exists.\nDo you want to overwrite it?")) == KMessageBox::No) {
nameEdit->setFocus();
return;
}
KnownVariable *v = edited_variable;
if(!v) {
//no need to create a new variable when a variable with the same name exists
Variable *var = CALCULATOR->getActiveVariable(str);
if(var && var->isLocal() && var->isKnown()) v = (KnownVariable*) var;
}
bool add_var = false;
if(v) {
//update existing variable
v->setLocal(true);
if(!v->isBuiltin()) {
if(force_init_value && init_value) {
v->set(*init_value);
} else {
v->set(CALCULATOR->unlocalizeExpression(valueEdit->text().ascii(), evalops.parse_options));
v->setApproximate(!valueExactButton->isChecked());
}
}
} else {
//new variable
if(force_init_value && init_value) {
//forced value
v = new KnownVariable("", "", *init_value, "", true);
} else {
v = new KnownVariable("", "", CALCULATOR->unlocalizeExpression(valueEdit->text().ascii(), evalops.parse_options), "", true);
v->setApproximate(!valueExactButton->isChecked());
}
add_var = true;
}
v->setCategory(categoryCombo->lineEdit()->text().ascii());
v->setTitle(titleEdit->text().ascii());
if(!v->isBuiltin()) {
if(names_edit_dialog) {
names_edit_dialog->saveNames(v, str.c_str());
} else {
if(v->countNames() == 0) {
ExpressionName ename(str);
ename.reference = true;
v->setName(ename, 1);
} else {
v->setName(str, 1);
}
}
}
if(add_var) {
CALCULATOR->addVariable(v);
}
edited_variable = v;
accept();
}
KnownVariable *QalculateEditVariableDialog::editVariable(TQString category, KnownVariable *v, MathStructure *initial_value, bool force_value) {
nameEdit->setFocus();
if(names_edit_dialog) {
delete names_edit_dialog;
names_edit_dialog = NULL;
}
edited_variable = v;
if(v) {
if(v->isLocal()) {
setCaption(i18n("Edit Variable"));
} else {
setCaption(i18n("Edit Variable (global)"));
}
} else {
setCaption(i18n("New Variable"));
}
actionButton(Ok)->setEnabled(true);
namesLabel->setText("");
//TQStringList cats;
TQString catstr;
categoryCombo->clear();
tree_struct *item, *item2;
variable_cats.it = variable_cats.items.begin();
if(variable_cats.it != variable_cats.items.end()) {
item = &*variable_cats.it;
++variable_cats.it;
item->it = item->items.begin();
} else {
item = NULL;
}
catstr = "";
while(item) {
if(!catstr.isEmpty()) catstr += "/";
catstr += item->item.c_str();
categoryCombo->insertItem(catstr);
while(item && item->it == item->items.end()) {
int str_i = catstr.findRev("/");
if(str_i < 0) {
catstr = "";
} else {
catstr.truncate(str_i);
}
item = item->parent;
}
if(item) {
item2 = &*item->it;
++item->it;
item = item2;
item->it = item->items.begin();
}
}
if(initial_value && force_value) {
valueEdit->hide();
valueLabel->hide();
namesButton->hide();
namesLabel->hide();
valueExactButton->hide();
} else {
valueEdit->show();
valueLabel->show();
namesButton->show();
namesLabel->show();
valueExactButton->show();
}
if(v) {
//fill in original parameters
set_name_label_and_entry(v, nameEdit, namesLabel);
valueEdit->setText(get_value_string(v->get(), false, NULL));
nameEdit->setReadOnly(v->isBuiltin());
valueEdit->setReadOnly(v->isBuiltin());
valueExactButton->setEnabled(!v->isBuiltin());
categoryCombo->lineEdit()->setText(v->category().c_str());
titleEdit->setText(v->title(false).c_str());
valueExactButton->setChecked(!(*printops.is_approximate) && !v->isApproximate());
} else {
nameEdit->setReadOnly(false);
valueEdit->setReadOnly(false);
valueExactButton->setEnabled(true);
//fill in default values
nameEdit->setText(CALCULATOR->getName().c_str());
namesLabel->setText("");
if(initial_value && !force_value) valueEdit->setText(get_value_string(*initial_value));
else valueEdit->setText("");
categoryCombo->lineEdit()->setText(category);
titleEdit->setText("");
if(initial_value) valueExactButton->setChecked(!initial_value->isApproximate());
else valueExactButton->setChecked(true);
if(force_value) {
valueEdit->setReadOnly(true);
valueExactButton->setEnabled(false);
}
}
init_value = initial_value;
force_init_value = force_value;
if(exec() == TQDialog::Accepted) {
v = edited_variable;
edited_variable = NULL;
return v;
}
edited_variable = NULL;
return NULL;
}
void QalculateEditVariableDialog::editNames() {
if(!names_edit_dialog) {
names_edit_dialog = new QalculateEditNamesDialog(TYPE_VARIABLE, this);
names_edit_dialog->setNames(edited_variable, nameEdit->text(), false);
} else {
names_edit_dialog->setNames(edited_variable, nameEdit->text(), true);
}
names_edit_dialog->exec();
names_edit_dialog->setNamesLE(nameEdit, namesLabel);
}
void QalculateEditVariableDialog::nameChanged(const TQString &name) {
if(name.isNull()) return;
if(!CALCULATOR->variableNameIsValid(name.ascii())) {
nameEdit->blockSignals(true);
nameEdit->setText(CALCULATOR->convertToValidVariableName(name.ascii()).c_str());
nameEdit->blockSignals(false);
}
}
#include "qalculateeditvariabledialog.moc"